# BlockResponse
A BlockResponse includes a fully-populated block or a partially-populated block with a list of other transactions to fetch (other_transactions). As a result of the consensus algorithm of some blockchains, blocks can be omitted (i.e. certain block indices can be skipped). If a query for one of these omitted indices is made, the response should not include a `Block` object. It is VERY important to note that blocks MUST still form a canonical, connected chain of blocks where each block has a unique index. In other words, the `PartialBlockIdentifier` of a block after an omitted block should reference the last non-omitted block.
## Example Usage
```typescript
import { BlockResponse } from "icpmcp-rosetta-api";
let value: BlockResponse = {
block: {
blockIdentifier: {
index: 1123941,
hash:
"0x1f2cc6c5027d2f201a5453ad1119574d2aed23a392654742ac3c78783c071f85",
},
parentBlockIdentifier: {
index: 1123941,
hash:
"0x1f2cc6c5027d2f201a5453ad1119574d2aed23a392654742ac3c78783c071f85",
},
timestamp: 1582833600000,
transactions: [],
metadata: {},
},
otherTransactions: [
{
hash:
"0x2f23fd8cca835af21f3ac375bac601f97ead75f2e79143bdf71fe2c4be043e8f",
},
],
};
```
## Fields
| Field | Type | Required | Description |
| ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `block` | [models.Block](../models/block.md) | :heavy_minus_sign: | Blocks contain an array of Transactions that occurred at a particular BlockIdentifier. A hard requirement for blocks returned by Rosetta implementations is that they MUST be _inalterable_: once a client has requested and received a block identified by a specific BlockIndentifier, all future calls for that same BlockIdentifier must return the same block contents. |
| `otherTransactions` | [models.TransactionIdentifier](../models/transactionidentifier.md)[] | :heavy_minus_sign: | Some blockchains may require additional transactions to be fetched that weren't returned in the block response (ex: block only returns transaction hashes). For blockchains with a lot of transactions in each block, this can be very useful as consumers can concurrently fetch all transactions returned. |
