bitcoin-stratigraphy

by app.replit.bitcoin-stratigraphy-dashboard--charlesstrogish

Ground Agent Context in Bitcoin State

proof.ground

PURPOSE & BOUNDARIES: Issue a signed Bitcoin-tip receipt for either agent context (contextHash plus agentId) or a dataset CID; this is an anchor, not a ZK or Bitcoin-confirmed OTS proof. USAGE GUIDELINES: Use proof.verify for proof verification without anchoring or proof.get_by_hash for existing receipts. BEHAVIOR & CONSEQUENCES: Creates a receipt and costs 250 sats via HTTP L402 without valid credentials; the two input modes are exclusive, invalid inputs fail, and tip/provider availability is required.

Input Schema

TableJSON Schema

Name	Required	Description
`cid`	No	Target IPFS CID or 32-byte hex dataset hash anchored directly to the live Bitcoin block height. Example: a 64-character lowercase hex digest.
`agentId`	No	Unique agent instance identifier named in the signed attestation receipt; trimmed to 1-256 characters. Constraints: minLength: 1; maxLength: 256. Example: "research-agent-7".
`context`	No	Optional JSON metadata object bound into the signed receipt tuple for additional execution context. Example: {"source":"dataset"}.
`metadata`	No	Optional non-secret JSON key-value metadata bound to the signed receipt; serialized size must not exceed 16 KiB. Example: {"topic":"difficulty-adjustment"}.
`contextHash`	No	64-character hexadecimal SHA-256 digest binding the agent's prompt or execution state to the current block tip; normalized to lowercase. Constraints: minLength: 64; maxLength: 64; pattern: ^[0-9a-fA-F]{64}$. Example: "4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f".
`nostrEventId`	No	Optional Nostr event ID linked into the signed receipt payload to bind off-chain publications to the block tip. Example: a 64-character lowercase hex event ID.

Output Schema

TableJSON Schema

Name	Required	Description
`receipt`	Yes	Full signed context receipt or signed dataset receipt wrapper. Example: a signed Bitcoin-tip anchor.
`otsProof`	No	Base64 serialized .ots proof of the dataset root bytes, when a calendar receipt is available. Constraints: format: byte. Example: "AQID".
`otsStatus`	No	Calendar-only or independently Bitcoin-verified status of the OTS receipt. Constraints: allowed values: pending_calendar, bitcoin_block_attested. Example: "pending_calendar".
`provenanceVerified`	Yes	Whether this signed receipt binds the current verified dataset chain, not whether Bitcoin has attested its OTS proof. Example: true.
`provenanceMerkleRoot`	No	Dataset chain root signed in the receipt, when the referenced dataset still matches. Constraints: pattern: ^[0-9a-f]{64}$. Example: "abababababababababababababababababababababababababababababababab".

Schema Changelog

Changes observed during successful MCP inspections.

Changed1 schema field changedSep 28, 2026

changedInput schema / description

Previous value: -"Provide contextHash and agentId to ground live agent context, or cid to anchor a dataset; the modes are exclusive."New value: +"Provide contextHash and agentId together for live agent context, or cid for a dataset anchor; these two modes are exclusive. Optional metadata applies to context mode; optional nostrEventId and context apply to dataset mode."

Changed6 schema fields changedSep 28, 2026

changedOutput schema / examples

Previous value: -[
-  {
-    "receipt": {
-      "agentId": "research-agent-7",
-      "blockHash": "abababababababababababababababababababababababababababababababab",
-      "blockHeight": 920001,
-      "contextHash": "4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f",
-      "merkleRoot": "cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd",
-      "nostrSignature": {
-        "nip": 78,
-        "protocol": "nostr"
-      },
-      "payload": {
-        "contextHash": "4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f"
-      },
-      "proof": {
-        "algorithm": "sha256",
-        "merkleRoot": "cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd"
-      },
-      "receiptSchema": "bitcoin-stratigraphy/epistemic-anchor/v1",
-      "schema": "bitcoin-stratigraphy/cryptographic-attestation/v1",
-      "signature": {
-        "nip": 78,
-        "protocol": "nostr"
-      },
-      "timestamp": 1789776000000
-    }
-  },
-  {
-    "receipt": {
-      "attestation": {
-        "proofPayload": "{\"receiptSchema\":\"bitcoin-stratigraphy/epistemic-anchor/v1\",\"contextHash\":\"cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd\"}",
-        "type": "Signed-Bitcoin-Tip-Anchor",
-        "verified": true
-      },
-      "blockHash": "abababababababababababababababababababababababababababababababab",
-      "blockTip": 920001,
-      "ipfsCid": "efefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefef",
-      "nostrEventId": "abababababababababababababababababababababababababababababababab",
-      "receiptHash": "cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd",
-      "timestamp": "2026-09-19T01:41:36.458Z"
-    }
-  }
-]New value: +[
+  {
+    "provenanceVerified": true,
+    "receipt": {
+      "agentId": "research-agent-7",
+      "blockHash": "abababababababababababababababababababababababababababababababab",
+      "blockHeight": 920001,
+      "contextHash": "4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f",
+      "merkleRoot": "cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd",
+      "nostrSignature": {
+        "nip": 78,
+        "protocol": "nostr"
+      },
+      "payload": {
+        "contextHash": "4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f"
+      },
+      "proof": {
+        "algorithm": "sha256",
+        "merkleRoot": "cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd"
+      },
+      "receiptSchema": "bitcoin-stratigraphy/epistemic-anchor/v1",
+      "schema": "bitcoin-stratigraphy/cryptographic-attestation/v1",
+      "signature": {
+        "nip": 78,
+        "protocol": "nostr"
+      },
+      "timestamp": 1789776000000
+    }
+  },
+  {
+    "provenanceVerified": true,
+    "receipt": {
+      "attestation": {
+        "proofPayload": "{\"receiptSchema\":\"bitcoin-stratigraphy/epistemic-anchor/v1\",\"contextHash\":\"cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd\"}",
+        "type": "Signed-Bitcoin-Tip-Anchor",
+        "verified": true
+      },
+      "blockHash": "abababababababababababababababababababababababababababababababab",
+      "blockTip": 920001,
+      "ipfsCid": "efefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefef",
+      "nostrEventId": "abababababababababababababababababababababababababababababababab",
+      "receiptHash": "cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd",
+      "timestamp": "2026-09-19T01:41:36.458Z"
+    }
+  }
+]

addedOutput schema / properties / otsProof

Added value: +{
+  "description": "Base64 serialized .ots proof of the dataset root bytes, when a calendar receipt is available. Constraints: format: byte. Example: \"AQID\".",
+  "example": "AQID",
+  "examples": [
+    "AQID"
+  ],
+  "format": "byte",
+  "type": "string"
+}

addedOutput schema / properties / otsStatus

Added value: +{
+  "description": "Calendar-only or independently Bitcoin-verified status of the OTS receipt. Constraints: allowed values: pending_calendar, bitcoin_block_attested. Example: \"pending_calendar\".",
+  "enum": [
+    "pending_calendar",
+    "bitcoin_block_attested"
+  ],
+  "example": "pending_calendar",
+  "examples": [
+    "pending_calendar"
+  ],
+  "type": "string"
+}

addedOutput schema / properties / provenanceMerkleRoot

Added value: +{
+  "description": "Dataset chain root signed in the receipt, when the referenced dataset still matches. Constraints: pattern: ^[0-9a-f]{64}$. Example: \"abababababababababababababababababababababababababababababababab\".",
+  "example": "abababababababababababababababababababababababababababababababab",
+  "examples": [
+    "abababababababababababababababababababababababababababababababab"
+  ],
+  "pattern": "^[0-9a-f]{64}$",
+  "type": "string"
+}

addedOutput schema / properties / provenanceVerified

Added value: +{
+  "description": "Whether this signed receipt binds the current verified dataset chain, not whether Bitcoin has attested its OTS proof. Example: true.",
+  "example": true,
+  "examples": [
+    true
+  ],
+  "type": "boolean"
+}

changedOutput schema / required

Previous value: -[
-  "receipt"
-]New value: +[
+  "receipt",
+  "provenanceVerified"
+]

Changed15 schema fields changedSep 27, 2026

changedInput schema / description

Previous value: -"Epistemic context grounding request for a directly returned signed anchor receipt after MCP settlement."New value: +"Provide contextHash and agentId to ground live agent context, or cid to anchor a dataset; the modes are exclusive."

changedInput schema / examples

Previous value: -[
-  {
-    "agentId": "research-agent-7",
-    "contextHash": "4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f",
-    "metadata": {
-      "topic": "difficulty-adjustment"
-    }
-  }
-]New value: +[
+  {
+    "agentId": "research-agent-7",
+    "contextHash": "4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f",
+    "metadata": {
+      "topic": "difficulty-adjustment"
+    }
+  },
+  {
+    "cid": "bafybeigdyrzt5sfp7udm7hu76uhka4lyer5y2wjy7zt6fw7v6r2w4x3ydq",
+    "context": {
+      "source": "dataset"
+    },
+    "nostrEventId": "abababababababababababababababababababababababababababababababab"
+  }
+]

addedInput schema / oneOf

Added value: +[
+  {
+    "required": [
+      "contextHash",
+      "agentId"
+    ]
+  },
+  {
+    "required": [
+      "cid"
+    ]
+  }
+]

addedInput schema / properties / cid

Added value: +{
+  "description": "Target IPFS CID or 32-byte hex dataset hash anchored directly to the live Bitcoin block height. Example: a 64-character lowercase hex digest.",
+  "example": "abababababababababababababababababababababababababababababababab",
+  "examples": [
+    "abababababababababababababababababababababababababababababababab"
+  ],
+  "maxLength": 256,
+  "pattern": "^(?:Qm[1-9A-HJ-NP-Za-km-z]{44}|b[a-z2-7]{20,}|(?:0x)?[0-9a-fA-F]{64})$",
+  "type": "string"
+}

addedInput schema / properties / context

Added value: +{
+  "additionalProperties": true,
+  "description": "Optional JSON metadata object bound into the signed receipt tuple for additional execution context. Example: {\"source\":\"dataset\"}.",
+  "example": {
+    "source": "dataset"
+  },
+  "examples": [
+    {
+      "source": "dataset"
+    }
+  ],
+  "type": "object"
+}

addedInput schema / properties / nostrEventId

Added value: +{
+  "description": "Optional Nostr event ID linked into the signed receipt payload to bind off-chain publications to the block tip. Example: a 64-character lowercase hex event ID.",
+  "example": "abababababababababababababababababababababababababababababababab",
+  "examples": [
+    "abababababababababababababababababababababababababababababababab"
+  ],
+  "pattern": "^[0-9a-fA-F]{64}$",
+  "type": "string"
+}

removedInput schema / required

Removed value: -[
-  "contextHash",
-  "agentId"
-]

changedOutput schema / description

Previous value: -"Signed epistemic anchor receipt grounded against a Bitcoin tip."New value: +"Signed context or dataset receipt anchored to the current Bitcoin tip."

changedOutput schema / examples

Previous value: -[
-  {
-    "receipt": {
-      "agentId": "research-agent-7",
-      "blockHash": "abababababababababababababababababababababababababababababababab",
-      "blockHeight": 920001,
-      "contextHash": "4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f",
-      "merkleRoot": "cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd",
-      "nostrSignature": {
-        "nip": 78,
-        "protocol": "nostr"
-      },
-      "payload": {
-        "contextHash": "4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f"
-      },
-      "proof": {
-        "algorithm": "sha256",
-        "merkleRoot": "cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd"
-      },
-      "receiptSchema": "bitcoin-stratigraphy/epistemic-anchor/v1",
-      "schema": "bitcoin-stratigraphy/cryptographic-attestation/v1",
-      "signature": {
-        "nip": 78,
-        "protocol": "nostr"
-      },
-      "timestamp": 1789776000000
-    }
-  }
-]New value: +[
+  {
+    "receipt": {
+      "agentId": "research-agent-7",
+      "blockHash": "abababababababababababababababababababababababababababababababab",
+      "blockHeight": 920001,
+      "contextHash": "4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f",
+      "merkleRoot": "cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd",
+      "nostrSignature": {
+        "nip": 78,
+        "protocol": "nostr"
+      },
+      "payload": {
+        "contextHash": "4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f"
+      },
+      "proof": {
+        "algorithm": "sha256",
+        "merkleRoot": "cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd"
+      },
+      "receiptSchema": "bitcoin-stratigraphy/epistemic-anchor/v1",
+      "schema": "bitcoin-stratigraphy/cryptographic-attestation/v1",
+      "signature": {
+        "nip": 78,
+        "protocol": "nostr"
+      },
+      "timestamp": 1789776000000
+    }
+  },
+  {
+    "receipt": {
+      "attestation": {
+        "proofPayload": "{\"receiptSchema\":\"bitcoin-stratigraphy/epistemic-anchor/v1\",\"contextHash\":\"cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd\"}",
+        "type": "Signed-Bitcoin-Tip-Anchor",
+        "verified": true
+      },
+      "blockHash": "abababababababababababababababababababababababababababababababab",
+      "blockTip": 920001,
+      "ipfsCid": "efefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefef",
+      "nostrEventId": "abababababababababababababababababababababababababababababababab",
+      "receiptHash": "cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd",
+      "timestamp": "2026-09-19T01:41:36.458Z"
+    }
+  }
+]

removedOutput schema / properties / receipt / additionalProperties
```
Removed value: -true
```

changedOutput schema / properties / receipt / description

Previous value: -"Full signed receipt; send unchanged to POST /api/v1/zk/verify as attestation. Example: {\"receiptSchema\":\"bitcoin-stratigraphy/epistemic-anchor/v1\",\"contextHash\":\"4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f\",\"agentId\":\"research-agent-7\",\"blockHeight\":920001,\"blockHash\":\"abababababababababababababababababababababababababababababababab\",\"merkleRoot\":\"cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd\",\"timestamp\":1789776000000,\"schema\":\"bitcoin-stratigraphy/cryptographic-attestation/v1\",\"payload\":{\"contextHash\":\"4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f\"},\"proof\":{\"algorithm\":\"sha256\",\"merkleRoot\":\"cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd\"},\"signature\":{\"protocol\":\"nostr\",\"nip\":78},\"nostrSignature\":{\"protocol\":\"nostr\",\"nip\":78}}."New value: +"Full signed context receipt or signed dataset receipt wrapper. Example: a signed Bitcoin-tip anchor."

removedOutput schema / properties / receipt / example

Removed value: -{
-  "agentId": "research-agent-7",
-  "blockHash": "abababababababababababababababababababababababababababababababab",
-  "blockHeight": 920001,
-  "contextHash": "4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f",
-  "merkleRoot": "cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd",
-  "nostrSignature": {
-    "nip": 78,
-    "protocol": "nostr"
-  },
-  "payload": {
-    "contextHash": "4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f"
-  },
-  "proof": {
-    "algorithm": "sha256",
-    "merkleRoot": "cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd"
-  },
-  "receiptSchema": "bitcoin-stratigraphy/epistemic-anchor/v1",
-  "schema": "bitcoin-stratigraphy/cryptographic-attestation/v1",
-  "signature": {
-    "nip": 78,
-    "protocol": "nostr"
-  },
-  "timestamp": 1789776000000
-}

addedOutput schema / properties / receipt / oneOf

Added value: +[
+  {
+    "additionalProperties": true,
+    "description": "Full signed receipt; send unchanged to POST /api/v1/zk/verify as attestation. Example: {\"receiptSchema\":\"bitcoin-stratigraphy/epistemic-anchor/v1\",\"contextHash\":\"4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f\",\"agentId\":\"research-agent-7\",\"blockHeight\":920001,\"blockHash\":\"abababababababababababababababababababababababababababababababab\",\"merkleRoot\":\"cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd\",\"timestamp\":1789776000000,\"schema\":\"bitcoin-stratigraphy/cryptographic-attestation/v1\",\"payload\":{\"contextHash\":\"4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f\"},\"proof\":{\"algorithm\":\"sha256\",\"merkleRoot\":\"cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd\"},\"signature\":{\"protocol\":\"nostr\",\"nip\":78},\"nostrSignature\":{\"protocol\":\"nostr\",\"nip\":78}}.",
+    "example": {
+      "agentId": "research-agent-7",
+      "blockHash": "abababababababababababababababababababababababababababababababab",
+      "blockHeight": 920001,
+      "contextHash": "4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f",
+      "merkleRoot": "cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd",
+      "nostrSignature": {
+        "nip": 78,
+        "protocol": "nostr"
+      },
+      "payload": {
+        "contextHash": "4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f"
+      },
+      "proof": {
+        "algorithm": "sha256",
+        "merkleRoot": "cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd"
+      },
+      "receiptSchema": "bitcoin-stratigraphy/epistemic-anchor/v1",
+      "schema": "bitcoin-stratigraphy/cryptographic-attestation/v1",
+      "signature": {
+        "nip": 78,
+        "protocol": "nostr"
+      },
+      "timestamp": 1789776000000
+    },
+    "examples": [
+      {
+        "agentId": "research-agent-7",
+        "blockHash": "abababababababababababababababababababababababababababababababab",
+        "blockHeight": 920001,
+        "contextHash": "4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f",
+        "merkleRoot": "cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd",
+        "nostrSignature": {
+          "nip": 78,
+          "protocol": "nostr"
+        },
+        "payload": {
+          "contextHash": "4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f"
+        },
+        "proof": {
+          "algorithm": "sha256",
+          "merkleRoot": "cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd"
+        },
+        "receiptSchema": "bitcoin-stratigraphy/epistemic-anchor/v1",
+        "schema": "bitcoin-stratigraphy/cryptographic-attestation/v1",
+        "signature": {
+          "nip": 78,
+          "protocol": "nostr"
+        },
+        "timestamp": 1789776000000
+      }
+    ],
+    "properties": {
+      "agentId": {
+        "description": "Trimmed caller identifier. Example: \"research-agent-7\".",
+        "example": "research-agent-7",
+        "examples": [
+          "research-agent-7"
+        ],
+        "type": "string"
+      },
+      "blockHash": {
+        "description": "Grounding Bitcoin block hash. Example: \"abababababababababababababababababababababababababababababababab\".",
+        "example": "abababababababababababababababababababababababababababababababab",
+        "examples": [
+          "abababababababababababababababababababababababababababababababab"
+        ],
+        "type": "string"
+      },
+      "blockHeight": {
+        "description": "Grounding Bitcoin block height. Example: 920001.",
+        "example": 920001,
+        "examples": [
+          920001
+        ],
+        "type": "integer"
+      },
+      "contextHash": {
+        "description": "Lowercase SHA-256 context digest. Example: \"4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f\".",
+        "example": "4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f",
+        "examples": [
+          "4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f"
+        ],
+        "type": "string"
+      },
+      "merkleRoot": {
+        "description": "Signed payload Merkle root. Example: \"cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd\".",
+        "example": "cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd",
+        "examples": [
+          "cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd"
+        ],
+        "type": "string"
+      },
+      "nostrSignature": {
+        "additionalProperties": true,
+        "description": "Alias for the signed NIP-78 event. Example: {\"protocol\":\"nostr\",\"nip\":78}.",
+        "example": {
+          "nip": 78,
+          "protocol": "nostr"
+        },
+        "examples": [
+          {
+            "nip": 78,
+            "protocol": "nostr"
+          }
+        ],
+        "type": "object"
+      },
+      "payload": {
+        "additionalProperties": true,
+        "description": "Context and Bitcoin state committed by the signature. Example: {\"contextHash\":\"4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f\"}.",
+        "example": {
+          "contextHash": "4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f"
+        },
+        "examples": [
+          {
+            "contextHash": "4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f"
+          }
+        ],
+        "type": "object"
+      },
+      "proof": {
+        "additionalProperties": true,
+        "description": "SHA-256 payload and Merkle commitment. Example: {\"algorithm\":\"sha256\",\"merkleRoot\":\"cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd\"}.",
+        "example": {
+          "algorithm": "sha256",
+          "merkleRoot": "cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd"
+        },
+        "examples": [
+          {
+            "algorithm": "sha256",
+            "merkleRoot": "cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd"
+          }
+        ],
+        "type": "object"
+      },
+      "receiptSchema": {
+        "description": "Epistemic anchor receipt schema. Example: \"bitcoin-stratigraphy/epistemic-anchor/v1\".",
+        "example": "bitcoin-stratigraphy/epistemic-anchor/v1",
+        "examples": [
+          "bitcoin-stratigraphy/epistemic-anchor/v1"
+        ],
+        "type": "string"
+      },
+      "schema": {
+        "description": "Cryptographic attestation schema. Example: \"bitcoin-stratigraphy/cryptographic-attestation/v1\".",
+        "example": "bitcoin-stratigraphy/cryptographic-attestation/v1",
+        "examples": [
+          "bitcoin-stratigraphy/cryptographic-attestation/v1"
+        ],
+        "type": "string"
+      },
+      "signature": {
+        "additionalProperties": true,
+        "description": "Nostr NIP-78 event signing the commitment. Example: {\"protocol\":\"nostr\",\"nip\":78}.",
+        "example": {
+          "nip": 78,
+          "protocol": "nostr"
+        },
+        "examples": [
+          {
+            "nip": 78,
+            "protocol": "nostr"
+          }
+        ],
+        "type": "object"
+      },
+      "timestamp": {
+        "description": "Grounding time in Unix milliseconds. Example: 1789776000000.",
+        "example": 1789776000000,
+        "examples": [
+          1789776000000
+        ],
+        "type": "integer"
+      }
+    },
+    "required": [
+      "receiptSchema",
+      "contextHash",
+      "agentId",
+      "blockHeight",
+      "blockHash",
+      "merkleRoot",
+      "timestamp",
+      "schema",
+      "payload",
+      "proof",
+      "signature",
+      "nostrSignature"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "description": "Signed dataset anchor; receiptHash is a tuple digest and proofPayload is a full verifiable signed receipt, not a ZK proof.",
+    "examples": [
+      {
+        "attestation": {
+          "proofPayload": "{\"receiptSchema\":\"bitcoin-stratigraphy/epistemic-anchor/v1\",\"contextHash\":\"cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd\"}",
+          "type": "Signed-Bitcoin-Tip-Anchor",
+          "verified": true
+        },
+        "blockHash": "abababababababababababababababababababababababababababababababab",
+        "blockTip": 920001,
+        "ipfsCid": "efefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefef",
+        "nostrEventId": "abababababababababababababababababababababababababababababababab",
+        "receiptHash": "cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd",
+        "timestamp": "2026-09-19T01:41:36.458Z"
+      }
+    ],
+    "properties": {
+      "attestation": {
+        "additionalProperties": false,
+        "description": "Self-verified signed Bitcoin-tip attestation; not a Groth16 proof or a PoW validity proof.",
+        "examples": [
+          {
+            "proofPayload": "{\"receiptSchema\":\"bitcoin-stratigraphy/epistemic-anchor/v1\",\"contextHash\":\"cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd\"}",
+            "type": "Signed-Bitcoin-Tip-Anchor",
+            "verified": true
+          }
+        ],
+        "properties": {
+          "proofPayload": {
+            "description": "JSON-serialized complete signed receipt; parse and send as attestation to POST /api/v1/zk/verify. Example: \"{\\\"receiptSchema\\\":\\\"bitcoin-stratigraphy/epistemic-anchor/v1\\\"}\".",
+            "example": "{\"receiptSchema\":\"bitcoin-stratigraphy/epistemic-anchor/v1\"}",
+            "examples": [
+              "{\"receiptSchema\":\"bitcoin-stratigraphy/epistemic-anchor/v1\"}"
+            ],
+            "type": "string"
+          },
+          "type": {
+            "const": "Signed-Bitcoin-Tip-Anchor",
+            "description": "Signed Bitcoin-tip anchor type, not a ZK scheme. Example: \"Signed-Bitcoin-Tip-Anchor\".",
+            "example": "Signed-Bitcoin-Tip-Anchor",
+            "examples": [
+              "Signed-Bitcoin-Tip-Anchor"
+            ],
+            "type": "string"
+          },
+          "verified": {
+            "description": "Whether the signed receipt passed self-verification before return; not a Bitcoin PoW or ZK proof verification. Example: true.",
+            "example": true,
+            "examples": [
+              true
+            ],
+            "type": "boolean"
+          }
+        },
+        "required": [
+          "type",
+          "proofPayload",
+          "verified"
+        ],
+        "type": "object"
+      },
+      "blockHash": {
+        "description": "Current Bitcoin block hash included in the signed payload. Constraints: pattern: ^[0-9a-f]{64}$. Example: \"abababababababababababababababababababababababababababababababab\".",
+        "example": "abababababababababababababababababababababababababababababababab",
+        "examples": [
+          "abababababababababababababababababababababababababababababababab"
+        ],
+        "pattern": "^[0-9a-f]{64}$",
+        "type": "string"
+      },
+      "blockTip": {
+        "description": "Current Bitcoin block height verified at receipt issuance. Constraints: minimum: 1. Example: 920001.",
+        "example": 920001,
+        "examples": [
+          920001
+        ],
+        "minimum": 1,
+        "type": "integer"
+      },
+      "ipfsCid": {
+        "description": "Original dataset CID or hex hash included in the signed payload. Example: \"efefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefef\".",
+        "example": "efefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefef",
+        "examples": [
+          "efefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefef"
+        ],
+        "type": "string"
+      },
+      "nostrEventId": {
+        "description": "Optional caller-supplied Nostr event ID included in the signed payload; not a publication result. Constraints: pattern: ^[0-9a-fA-F]{64}$. Example: \"abababababababababababababababababababababababababababababababab\".",
+        "example": "abababababababababababababababababababababababababababababababab",
+        "examples": [
+          "abababababababababababababababababababababababababababababababab"
+        ],
+        "pattern": "^[0-9a-fA-F]{64}$",
+        "type": "string"
+      },
+      "receiptHash": {
+        "description": "SHA-256 hex digest of the JSON tuple [cid, blockHash, blockTip, nostrEventId or empty string, ISO timestamp], signed as the receipt contextHash. Constraints: pattern: ^[0-9a-f]{64}$. Example: \"cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd\".",
+        "example": "cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd",
+        "examples": [
+          "cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd"
+        ],
+        "pattern": "^[0-9a-f]{64}$",
+        "type": "string"
+      },
+      "timestamp": {
+        "description": "ISO 8601 UTC receipt issuance time included in the signed tuple. Constraints: format: date-time. Example: \"2026-09-19T01:41:36.458Z\".",
+        "example": "2026-09-19T01:41:36.458Z",
+        "examples": [
+          "2026-09-19T01:41:36.458Z"
+        ],
+        "format": "date-time",
+        "type": "string"
+      }
+    },
+    "required": [
+      "receiptHash",
+      "blockTip",
+      "blockHash",
+      "ipfsCid",
+      "attestation",
+      "timestamp"
+    ],
+    "type": "object"
+  }
+]

removedOutput schema / properties / receipt / properties

Removed value: -{
-  "agentId": {
-    "description": "Trimmed caller identifier. Example: \"research-agent-7\".",
-    "example": "research-agent-7",
-    "examples": [
-      "research-agent-7"
-    ],
-    "type": "string"
-  },
-  "blockHash": {
-    "description": "Grounding Bitcoin block hash. Example: \"abababababababababababababababababababababababababababababababab\".",
-    "example": "abababababababababababababababababababababababababababababababab",
-    "examples": [
-      "abababababababababababababababababababababababababababababababab"
-    ],
-    "type": "string"
-  },
-  "blockHeight": {
-    "description": "Grounding Bitcoin block height. Example: 920001.",
-    "example": 920001,
-    "examples": [
-      920001
-    ],
-    "type": "integer"
-  },
-  "contextHash": {
-    "description": "Lowercase SHA-256 context digest. Example: \"4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f\".",
-    "example": "4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f",
-    "examples": [
-      "4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f"
-    ],
-    "type": "string"
-  },
-  "merkleRoot": {
-    "description": "Signed payload Merkle root. Example: \"cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd\".",
-    "example": "cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd",
-    "examples": [
-      "cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd"
-    ],
-    "type": "string"
-  },
-  "nostrSignature": {
-    "additionalProperties": true,
-    "description": "Alias for the signed NIP-78 event. Example: {\"protocol\":\"nostr\",\"nip\":78}.",
-    "example": {
-      "nip": 78,
-      "protocol": "nostr"
-    },
-    "examples": [
-      {
-        "nip": 78,
-        "protocol": "nostr"
-      }
-    ],
-    "type": "object"
-  },
-  "payload": {
-    "additionalProperties": true,
-    "description": "Context and Bitcoin state committed by the signature. Example: {\"contextHash\":\"4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f\"}.",
-    "example": {
-      "contextHash": "4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f"
-    },
-    "examples": [
-      {
-        "contextHash": "4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f"
-      }
-    ],
-    "type": "object"
-  },
-  "proof": {
-    "additionalProperties": true,
-    "description": "SHA-256 payload and Merkle commitment. Example: {\"algorithm\":\"sha256\",\"merkleRoot\":\"cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd\"}.",
-    "example": {
-      "algorithm": "sha256",
-      "merkleRoot": "cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd"
-    },
-    "examples": [
-      {
-        "algorithm": "sha256",
-        "merkleRoot": "cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd"
-      }
-    ],
-    "type": "object"
-  },
-  "receiptSchema": {
-    "description": "Epistemic anchor receipt schema. Example: \"bitcoin-stratigraphy/epistemic-anchor/v1\".",
-    "example": "bitcoin-stratigraphy/epistemic-anchor/v1",
-    "examples": [
-      "bitcoin-stratigraphy/epistemic-anchor/v1"
-    ],
-    "type": "string"
-  },
-  "schema": {
-    "description": "Cryptographic attestation schema. Example: \"bitcoin-stratigraphy/cryptographic-attestation/v1\".",
-    "example": "bitcoin-stratigraphy/cryptographic-attestation/v1",
-    "examples": [
-      "bitcoin-stratigraphy/cryptographic-attestation/v1"
-    ],
-    "type": "string"
-  },
-  "signature": {
-    "additionalProperties": true,
-    "description": "Nostr NIP-78 event signing the commitment. Example: {\"protocol\":\"nostr\",\"nip\":78}.",
-    "example": {
-      "nip": 78,
-      "protocol": "nostr"
-    },
-    "examples": [
-      {
-        "nip": 78,
-        "protocol": "nostr"
-      }
-    ],
-    "type": "object"
-  },
-  "timestamp": {
-    "description": "Grounding time in Unix milliseconds. Example: 1789776000000.",
-    "example": 1789776000000,
-    "examples": [
-      1789776000000
-    ],
-    "type": "integer"
-  }
-}

removedOutput schema / properties / receipt / required

Removed value: -[
-  "receiptSchema",
-  "contextHash",
-  "agentId",
-  "blockHeight",
-  "blockHash",
-  "merkleRoot",
-  "timestamp",
-  "schema",
-  "payload",
-  "proof",
-  "signature",
-  "nostrSignature"
-]

Changed2 schema fields changedSep 25, 2026

changedInput schema / properties / agentId / description

Previous value: -"Trimmed client or agent identifier string from 1 to 256 characters. Constraints: minLength: 1; maxLength: 256. Example: \"research-agent-7\"."New value: +"Unique agent instance identifier named in the signed attestation receipt; trimmed to 1-256 characters. Constraints: minLength: 1; maxLength: 256. Example: \"research-agent-7\"."

changedInput schema / properties / contextHash / description

Previous value: -"64-character case-insensitive hexadecimal SHA-256 digest string; normalized to lowercase. Constraints: minLength: 64; maxLength: 64; pattern: ^[0-9a-fA-F]{64}$. Example: \"4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f\"."New value: +"64-character hexadecimal SHA-256 digest binding the agent's prompt or execution state to the current block tip; normalized to lowercase. Constraints: minLength: 64; maxLength: 64; pattern: ^[0-9a-fA-F]{64}$. Example: \"4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f\"."

Changed32 schema fields changedSep 24, 2026

removedInput schema / properties / agentId / default
```
Removed value: -"research-agent-7"
```

changedInput schema / properties / agentId / description

Previous value: -"Trimmed client or agent identifier string from 1 to 256 characters."New value: +"Trimmed client or agent identifier string from 1 to 256 characters. Constraints: minLength: 1; maxLength: 256. Example: \"research-agent-7\"."

removedInput schema / properties / contextHash / default

Removed value: -"4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f"

changedInput schema / properties / contextHash / description

Previous value: -"64-character case-insensitive hexadecimal SHA-256 digest string; normalized to lowercase."New value: +"64-character case-insensitive hexadecimal SHA-256 digest string; normalized to lowercase. Constraints: minLength: 64; maxLength: 64; pattern: ^[0-9a-fA-F]{64}$. Example: \"4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f\"."

removedInput schema / properties / metadata / default

Removed value: -{
-  "topic": "difficulty-adjustment"
-}

changedInput schema / properties / metadata / description

Previous value: -"Key-value JSON object containing arbitrary metadata."New value: +"Optional non-secret JSON key-value metadata bound to the signed receipt; serialized size must not exceed 16 KiB. Example: {\"topic\":\"difficulty-adjustment\"}."

removedOutput schema / properties / receipt / default

Removed value: -{
-  "agentId": "research-agent-7",
-  "blockHash": "abababababababababababababababababababababababababababababababab",
-  "blockHeight": 920001,
-  "contextHash": "4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f",
-  "merkleRoot": "cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd",
-  "nostrSignature": {
-    "nip": 78,
-    "protocol": "nostr"
-  },
-  "payload": {
-    "contextHash": "4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f"
-  },
-  "proof": {
-    "algorithm": "sha256",
-    "merkleRoot": "cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd"
-  },
-  "receiptSchema": "bitcoin-stratigraphy/epistemic-anchor/v1",
-  "schema": "bitcoin-stratigraphy/cryptographic-attestation/v1",
-  "signature": {
-    "nip": 78,
-    "protocol": "nostr"
-  },
-  "timestamp": 1789776000000
-}

changedOutput schema / properties / receipt / description

Previous value: -"Full signed receipt; send unchanged to POST /api/v1/zk/verify as attestation."New value: +"Full signed receipt; send unchanged to POST /api/v1/zk/verify as attestation. Example: {\"receiptSchema\":\"bitcoin-stratigraphy/epistemic-anchor/v1\",\"contextHash\":\"4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f\",\"agentId\":\"research-agent-7\",\"blockHeight\":920001,\"blockHash\":\"abababababababababababababababababababababababababababababababab\",\"merkleRoot\":\"cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd\",\"timestamp\":1789776000000,\"schema\":\"bitcoin-stratigraphy/cryptographic-attestation/v1\",\"payload\":{\"contextHash\":\"4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f\"},\"proof\":{\"algorithm\":\"sha256\",\"merkleRoot\":\"cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd\"},\"signature\":{\"protocol\":\"nostr\",\"nip\":78},\"nostrSignature\":{\"protocol\":\"nostr\",\"nip\":78}}."

removedOutput schema / properties / receipt / properties / agentId / default
```
Removed value: -"research-agent-7"
```

changedOutput schema / properties / receipt / properties / agentId / description

Previous value: -"Trimmed caller identifier."New value: +"Trimmed caller identifier. Example: \"research-agent-7\"."

removedOutput schema / properties / receipt / properties / blockHash / default

Removed value: -"abababababababababababababababababababababababababababababababab"

changedOutput schema / properties / receipt / properties / blockHash / description

Previous value: -"Grounding Bitcoin block hash."New value: +"Grounding Bitcoin block hash. Example: \"abababababababababababababababababababababababababababababababab\"."

removedOutput schema / properties / receipt / properties / blockHeight / default
```
Removed value: -920001
```

changedOutput schema / properties / receipt / properties / blockHeight / description

Previous value: -"Grounding Bitcoin block height."New value: +"Grounding Bitcoin block height. Example: 920001."

removedOutput schema / properties / receipt / properties / contextHash / default

Removed value: -"4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f"

changedOutput schema / properties / receipt / properties / contextHash / description

Previous value: -"Lowercase SHA-256 context digest."New value: +"Lowercase SHA-256 context digest. Example: \"4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f\"."

removedOutput schema / properties / receipt / properties / merkleRoot / default

Removed value: -"cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd"

changedOutput schema / properties / receipt / properties / merkleRoot / description

Previous value: -"Signed payload Merkle root."New value: +"Signed payload Merkle root. Example: \"cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd\"."

removedOutput schema / properties / receipt / properties / nostrSignature / default
```
Removed value: -{
-  "nip": 78,
-  "protocol": "nostr"
-}
```

changedOutput schema / properties / receipt / properties / nostrSignature / description

Previous value: -"Alias for the signed NIP-78 event."New value: +"Alias for the signed NIP-78 event. Example: {\"protocol\":\"nostr\",\"nip\":78}."

removedOutput schema / properties / receipt / properties / payload / default

Removed value: -{
-  "contextHash": "4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f"
-}

changedOutput schema / properties / receipt / properties / payload / description

Previous value: -"Context and Bitcoin state committed by the signature."New value: +"Context and Bitcoin state committed by the signature. Example: {\"contextHash\":\"4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f\"}."

removedOutput schema / properties / receipt / properties / proof / default

Removed value: -{
-  "algorithm": "sha256",
-  "merkleRoot": "cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd"
-}

changedOutput schema / properties / receipt / properties / proof / description

Previous value: -"SHA-256 payload and Merkle commitment."New value: +"SHA-256 payload and Merkle commitment. Example: {\"algorithm\":\"sha256\",\"merkleRoot\":\"cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd\"}."

removedOutput schema / properties / receipt / properties / receiptSchema / default
```
Removed value: -"bitcoin-stratigraphy/epistemic-anchor/v1"
```

changedOutput schema / properties / receipt / properties / receiptSchema / description

Previous value: -"Epistemic anchor receipt schema."New value: +"Epistemic anchor receipt schema. Example: \"bitcoin-stratigraphy/epistemic-anchor/v1\"."

removedOutput schema / properties / receipt / properties / schema / default
```
Removed value: -"bitcoin-stratigraphy/cryptographic-attestation/v1"
```

changedOutput schema / properties / receipt / properties / schema / description

Previous value: -"Cryptographic attestation schema."New value: +"Cryptographic attestation schema. Example: \"bitcoin-stratigraphy/cryptographic-attestation/v1\"."

removedOutput schema / properties / receipt / properties / signature / default
```
Removed value: -{
-  "nip": 78,
-  "protocol": "nostr"
-}
```

changedOutput schema / properties / receipt / properties / signature / description

Previous value: -"Nostr NIP-78 event signing the commitment."New value: +"Nostr NIP-78 event signing the commitment. Example: {\"protocol\":\"nostr\",\"nip\":78}."

removedOutput schema / properties / receipt / properties / timestamp / default
```
Removed value: -1789776000000
```

changedOutput schema / properties / receipt / properties / timestamp / description

Previous value: -"Grounding time in Unix milliseconds."New value: +"Grounding time in Unix milliseconds. Example: 1789776000000."

Changed11 schema fields changedSep 24, 2026

changedInput schema / description

Previous value: -"Epistemic context grounding request routed to the paid HTTP boundary."New value: +"Epistemic context grounding request for a directly returned signed anchor receipt after MCP settlement."

changedOutput schema / description

Previous value: -"L402 payment routing response for epistemic grounding."New value: +"Signed epistemic anchor receipt grounded against a Bitcoin tip."

changedOutput schema / examples

Previous value: -[
-  {
-    "amountSats": 5,
-    "endpoint": "/api/v1/zk/ground",
-    "error": "payment_required",
-    "request": {
-      "agentId": "research-agent-7",
-      "contextHash": "4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f",
-      "metadata": {
-        "topic": "difficulty-adjustment"
-      }
-    },
-    "status": 402,
-    "verificationEndpoint": "/api/v1/zk/verify"
-  }
-]New value: +[
+  {
+    "receipt": {
+      "agentId": "research-agent-7",
+      "blockHash": "abababababababababababababababababababababababababababababababab",
+      "blockHeight": 920001,
+      "contextHash": "4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f",
+      "merkleRoot": "cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd",
+      "nostrSignature": {
+        "nip": 78,
+        "protocol": "nostr"
+      },
+      "payload": {
+        "contextHash": "4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f"
+      },
+      "proof": {
+        "algorithm": "sha256",
+        "merkleRoot": "cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd"
+      },
+      "receiptSchema": "bitcoin-stratigraphy/epistemic-anchor/v1",
+      "schema": "bitcoin-stratigraphy/cryptographic-attestation/v1",
+      "signature": {
+        "nip": 78,
+        "protocol": "nostr"
+      },
+      "timestamp": 1789776000000
+    }
+  }
+]

removedOutput schema / properties / amountSats

Removed value: -{
-  "const": 5,
-  "default": 5,
-  "description": "Fixed grounding price in satoshis.",
-  "example": 5,
-  "examples": [
-    5
-  ],
-  "type": "integer"
-}

removedOutput schema / properties / endpoint

Removed value: -{
-  "default": "/api/v1/zk/ground",
-  "description": "Paid HTTP endpoint that performs grounding.",
-  "example": "/api/v1/zk/ground",
-  "examples": [
-    "/api/v1/zk/ground"
-  ],
-  "type": "string"
-}

removedOutput schema / properties / error

Removed value: -{
-  "const": "payment_required",
-  "default": "payment_required",
-  "description": "Stable payment-required error code.",
-  "example": "payment_required",
-  "examples": [
-    "payment_required"
-  ],
-  "type": "string"
-}

addedOutput schema / properties / receipt

Added value: +{
+  "additionalProperties": true,
+  "default": {
+    "agentId": "research-agent-7",
+    "blockHash": "abababababababababababababababababababababababababababababababab",
+    "blockHeight": 920001,
+    "contextHash": "4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f",
+    "merkleRoot": "cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd",
+    "nostrSignature": {
+      "nip": 78,
+      "protocol": "nostr"
+    },
+    "payload": {
+      "contextHash": "4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f"
+    },
+    "proof": {
+      "algorithm": "sha256",
+      "merkleRoot": "cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd"
+    },
+    "receiptSchema": "bitcoin-stratigraphy/epistemic-anchor/v1",
+    "schema": "bitcoin-stratigraphy/cryptographic-attestation/v1",
+    "signature": {
+      "nip": 78,
+      "protocol": "nostr"
+    },
+    "timestamp": 1789776000000
+  },
+  "description": "Full signed receipt; send unchanged to POST /api/v1/zk/verify as attestation.",
+  "example": {
+    "agentId": "research-agent-7",
+    "blockHash": "abababababababababababababababababababababababababababababababab",
+    "blockHeight": 920001,
+    "contextHash": "4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f",
+    "merkleRoot": "cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd",
+    "nostrSignature": {
+      "nip": 78,
+      "protocol": "nostr"
+    },
+    "payload": {
+      "contextHash": "4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f"
+    },
+    "proof": {
+      "algorithm": "sha256",
+      "merkleRoot": "cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd"
+    },
+    "receiptSchema": "bitcoin-stratigraphy/epistemic-anchor/v1",
+    "schema": "bitcoin-stratigraphy/cryptographic-attestation/v1",
+    "signature": {
+      "nip": 78,
+      "protocol": "nostr"
+    },
+    "timestamp": 1789776000000
+  },
+  "examples": [
+    {
+      "agentId": "research-agent-7",
+      "blockHash": "abababababababababababababababababababababababababababababababab",
+      "blockHeight": 920001,
+      "contextHash": "4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f",
+      "merkleRoot": "cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd",
+      "nostrSignature": {
+        "nip": 78,
+        "protocol": "nostr"
+      },
+      "payload": {
+        "contextHash": "4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f"
+      },
+      "proof": {
+        "algorithm": "sha256",
+        "merkleRoot": "cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd"
+      },
+      "receiptSchema": "bitcoin-stratigraphy/epistemic-anchor/v1",
+      "schema": "bitcoin-stratigraphy/cryptographic-attestation/v1",
+      "signature": {
+        "nip": 78,
+        "protocol": "nostr"
+      },
+      "timestamp": 1789776000000
+    }
+  ],
+  "properties": {
+    "agentId": {
+      "default": "research-agent-7",
+      "description": "Trimmed caller identifier.",
+      "example": "research-agent-7",
+      "examples": [
+        "research-agent-7"
+      ],
+      "type": "string"
+    },
+    "blockHash": {
+      "default": "abababababababababababababababababababababababababababababababab",
+      "description": "Grounding Bitcoin block hash.",
+      "example": "abababababababababababababababababababababababababababababababab",
+      "examples": [
+        "abababababababababababababababababababababababababababababababab"
+      ],
+      "type": "string"
+    },
+    "blockHeight": {
+      "default": 920001,
+      "description": "Grounding Bitcoin block height.",
+      "example": 920001,
+      "examples": [
+        920001
+      ],
+      "type": "integer"
+    },
+    "contextHash": {
+      "default": "4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f",
+      "description": "Lowercase SHA-256 context digest.",
+      "example": "4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f",
+      "examples": [
+        "4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f"
+      ],
+      "type": "string"
+    },
+    "merkleRoot": {
+      "default": "cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd",
+      "description": "Signed payload Merkle root.",
+      "example": "cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd",
+      "examples": [
+        "cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd"
+      ],
+      "type": "string"
+    },
+    "nostrSignature": {
+      "additionalProperties": true,
+      "default": {
+        "nip": 78,
+        "protocol": "nostr"
+      },
+      "description": "Alias for the signed NIP-78 event.",
+      "example": {
+        "nip": 78,
+        "protocol": "nostr"
+      },
+      "examples": [
+        {
+          "nip": 78,
+          "protocol": "nostr"
+        }
+      ],
+      "type": "object"
+    },
+    "payload": {
+      "additionalProperties": true,
+      "default": {
+        "contextHash": "4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f"
+      },
+      "description": "Context and Bitcoin state committed by the signature.",
+      "example": {
+        "contextHash": "4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f"
+      },
+      "examples": [
+        {
+          "contextHash": "4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f"
+        }
+      ],
+      "type": "object"
+    },
+    "proof": {
+      "additionalProperties": true,
+      "default": {
+        "algorithm": "sha256",
+        "merkleRoot": "cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd"
+      },
+      "description": "SHA-256 payload and Merkle commitment.",
+      "example": {
+        "algorithm": "sha256",
+        "merkleRoot": "cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd"
+      },
+      "examples": [
+        {
+          "algorithm": "sha256",
+          "merkleRoot": "cdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcdcd"
+        }
+      ],
+      "type": "object"
+    },
+    "receiptSchema": {
+      "default": "bitcoin-stratigraphy/epistemic-anchor/v1",
+      "description": "Epistemic anchor receipt schema.",
+      "example": "bitcoin-stratigraphy/epistemic-anchor/v1",
+      "examples": [
+        "bitcoin-stratigraphy/epistemic-anchor/v1"
+      ],
+      "type": "string"
+    },
+    "schema": {
+      "default": "bitcoin-stratigraphy/cryptographic-attestation/v1",
+      "description": "Cryptographic attestation schema.",
+      "example": "bitcoin-stratigraphy/cryptographic-attestation/v1",
+      "examples": [
+        "bitcoin-stratigraphy/cryptographic-attestation/v1"
+      ],
+      "type": "string"
+    },
+    "signature": {
+      "additionalProperties": true,
+      "default": {
+        "nip": 78,
+        "protocol": "nostr"
+      },
+      "description": "Nostr NIP-78 event signing the commitment.",
+      "example": {
+        "nip": 78,
+        "protocol": "nostr"
+      },
+      "examples": [
+        {
+          "nip": 78,
+          "protocol": "nostr"
+        }
+      ],
+      "type": "object"
+    },
+    "timestamp": {
+      "default": 1789776000000,
+      "description": "Grounding time in Unix milliseconds.",
+      "example": 1789776000000,
+      "examples": [
+        1789776000000
+      ],
+      "type": "integer"
+    }
+  },
+  "required": [
+    "receiptSchema",
+    "contextHash",
+    "agentId",
+    "blockHeight",
+    "blockHash",
+    "merkleRoot",
+    "timestamp",
+    "schema",
+    "payload",
+    "proof",
+    "signature",
+    "nostrSignature"
+  ],
+  "type": "object"
+}

removedOutput schema / properties / request

Removed value: -{
-  "additionalProperties": true,
-  "default": {
-    "agentId": "research-agent-7",
-    "contextHash": "4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f",
-    "metadata": {
-      "topic": "difficulty-adjustment"
-    }
-  },
-  "description": "Validated request to submit to the paid HTTP endpoint.",
-  "example": {
-    "agentId": "research-agent-7",
-    "contextHash": "4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f",
-    "metadata": {
-      "topic": "difficulty-adjustment"
-    }
-  },
-  "examples": [
-    {
-      "agentId": "research-agent-7",
-      "contextHash": "4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f4f",
-      "metadata": {
-        "topic": "difficulty-adjustment"
-      }
-    }
-  ],
-  "type": "object"
-}

removedOutput schema / properties / status

Removed value: -{
-  "const": 402,
-  "default": 402,
-  "description": "HTTP-equivalent payment-required status.",
-  "example": 402,
-  "examples": [
-    402
-  ],
-  "type": "integer"
-}

removedOutput schema / properties / verificationEndpoint

Removed value: -{
-  "default": "/api/v1/zk/verify",
-  "description": "Public endpoint that verifies the returned receipt unchanged.",
-  "example": "/api/v1/zk/verify",
-  "examples": [
-    "/api/v1/zk/verify"
-  ],
-  "type": "string"
-}

changedOutput schema / required

Previous value: -[
-  "status",
-  "error",
-  "endpoint",
-  "amountSats",
-  "verificationEndpoint",
-  "request"
-]New value: +[
+  "receipt"
+]

Changed2 schema fields changedSep 23, 2026

changedInput schema / properties / agentId / description

Previous value: -"Unique client or agent identifier string."New value: +"Trimmed client or agent identifier string from 1 to 256 characters."

changedInput schema / properties / contextHash / description

Previous value: -"64-character lowercase hexadecimal SHA-256 digest string."New value: +"64-character case-insensitive hexadecimal SHA-256 digest string; normalized to lowercase."

Changed3 schema fields changedSep 23, 2026

changedInput schema / properties / agentId / description

Previous value: -"Trimmed client or agent identifier string (1-256 characters)."New value: +"Unique client or agent identifier string."

changedInput schema / properties / contextHash / description

Previous value: -"64-character case-insensitive hexadecimal SHA-256 digest string; the tool normalizes it to lowercase."New value: +"64-character lowercase hexadecimal SHA-256 digest string."

changedInput schema / properties / metadata / description

Previous value: -"Key-value JSON object containing arbitrary metadata to bind to anchor."New value: +"Key-value JSON object containing arbitrary metadata."

Changed2 schema fields changedSep 23, 2026

changedInput schema / properties / agentId / description

Previous value: -"Unique client or agent identifier string (1-128 characters)."New value: +"Trimmed client or agent identifier string (1-256 characters)."

changedInput schema / properties / contextHash / description

Previous value: -"64-character lowercase hexadecimal SHA-256 digest string."New value: +"64-character case-insensitive hexadecimal SHA-256 digest string; the tool normalizes it to lowercase."

Changed3 schema fields changedSep 23, 2026

changedInput schema / properties / agentId / description

Previous value: -"Unique client or agent string identifier (1-128 characters)."New value: +"Unique client or agent identifier string (1-128 characters)."

changedInput schema / properties / contextHash / description

Previous value: -"SHA-256 hash string formatted as exactly 64 lowercase hexadecimal characters."New value: +"64-character lowercase hexadecimal SHA-256 digest string."

changedInput schema / properties / metadata / description

Previous value: -"Optional key-value JSON object containing arbitrary metadata to bind to anchor."New value: +"Key-value JSON object containing arbitrary metadata to bind to anchor."

Changed3 schema fields changedSep 23, 2026

changedInput schema / properties / agentId / description

Previous value: -"Stable caller-controlled identifier."New value: +"Unique client or agent string identifier (1-128 characters)."

changedInput schema / properties / contextHash / description

Previous value: -"64-character lowercase hexadecimal SHA-256 digest string."New value: +"SHA-256 hash string formatted as exactly 64 lowercase hexadecimal characters."

changedInput schema / properties / metadata / description

Previous value: -"Non-secret caller metadata bound into the context anchor."New value: +"Optional key-value JSON object containing arbitrary metadata to bind to anchor."

Changed1 schema field changedSep 22, 2026

changedInput schema / properties / contextHash / description

Previous value: -"SHA-256 digest of caller context."New value: +"64-character lowercase hexadecimal SHA-256 digest string."

Changed3 schema fields changedSep 22, 2026

changedInput schema / properties / agentId / description

Previous value: -"Required stable caller-controlled agent identifier from 1 through 256 characters."New value: +"Stable caller-controlled identifier."

changedInput schema / properties / contextHash / description

Previous value: -"Required SHA-256 digest of the agent context, encoded as exactly 64 hexadecimal characters."New value: +"SHA-256 digest of caller context."

changedInput schema / properties / metadata / description

Previous value: -"Optional JSON object carrying non-secret caller metadata to bind into the signed anchor."New value: +"Non-secret caller metadata bound into the context anchor."

AddedSep 22, 2026

TDQS

A4.7/5.0

Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations declare a non-read-only, open-world, non-idempotent operation, and the description adds the operational consequences the annotations cannot: a cost of 250 sats via HTTP L402 when credentials are absent, mutual exclusivity of the two input modes, failure on invalid inputs, and a dependency on tip/provider availability.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Three labeled sections front-load purpose, then routing, then consequences. Dense but every clause carries distinct information (cost, exclusivity, failure mode, availability) with no filler.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a paid, non-idempotent anchoring tool with six parameters, nested objects and a sibling family, the description covers cost, auth path, mode exclusivity and failure conditions. An output schema exists, so return values need no explanation here.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so every parameter including cid, contextHash, agentId, metadata, context and nostrEventId is already documented in the schema, and the schema description itself states the two modes are exclusive. The description restates mode exclusivity and which optional field belongs to which mode, adding little beyond the structured data, so the baseline 3 applies.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

States a specific verb and resource ('issue a signed Bitcoin-tip receipt') and immediately scopes it with two input modes (contextHash+agentId or cid). It also draws a boundary ('this is an anchor, not a ZK or Bitcoin-confirmed OTS proof'), which lets an agent distinguish it from proof.submit or proof.verify without opening the schema.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Explicitly names two alternative siblings and the condition that selects each: proof.verify for verification without anchoring, proof.get_by_hash for existing receipts. The when-not-anchoring route is spelled out rather than implied.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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