# Blocks and transactions Source: https://www.solscanner.app/docs/indexer/reference/chain > Blocks, transactions, receipts, logs, decoded logs and calldata, and internal transfers. The raw substrate. Transaction envelopes and receipts are byte-exact canonical records. Decoded views resolve where a decoder exists and report the rest as unknown rather than omitting them. Internal transfers come from node re-execution and are the one data class not verifiable against a block root. 13 routes. Every path below is served under `/index/v1/{chain}`, and every request carries an `x-api-key` header, so those two are not repeated per route. The shared contract for pagination, snapshots, precision and absence is in [Read API](/docs/indexer/api). Block [#block] ```http GET /blocks/{number} ``` Canonical block header. | Parameter | In | Required | Notes | | --------- | ---- | -------- | ----------------------- | | `number` | path | yes | Canonical block number. | Block Logs [#block-logs] ```http GET /blocks/{number}/logs ``` Logs emitted in a block. | Parameter | In | Required | Notes | | --------- | ----- | -------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `number` | path | yes | Canonical block number. | | `cursor` | query | no | Opaque page cursor. See [Pagination](/docs/indexer/api). | | `limit` | query | no | Page row cap. See [Pagination](/docs/indexer/api) for the shared contract; the exact default and maximum for this route are on the schema. | | `order` | query | no | Sort direction: this route's accepted values and default are on the schema (`enum`/`default`); a route whose backing index has no reverse walk accepts only `asc`. See [Pagination](/docs/indexer/api) for the shared contract. | Block Logs Decoded [#block-logs-decoded] ```http GET /blocks/{number}/logs/decoded ``` The same logs, decoded where a decoder resolves. Unresolved logs are reported as unknown. | Parameter | In | Required | Notes | | --------- | ----- | -------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `number` | path | yes | Canonical block number. | | `cursor` | query | no | Opaque page cursor. See [Pagination](/docs/indexer/api). | | `limit` | query | no | Page row cap. See [Pagination](/docs/indexer/api) for the shared contract; the exact default and maximum for this route are on the schema. | | `order` | query | no | Sort direction: this route's accepted values and default are on the schema (`enum`/`default`); a route whose backing index has no reverse walk accepts only `asc`. See [Pagination](/docs/indexer/api) for the shared contract. | Block Transactions [#block-transactions] ```http GET /blocks/{number}/transactions ``` Transactions in a block. | Parameter | In | Required | Notes | | --------- | ----- | -------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `number` | path | yes | Canonical block number. | | `cursor` | query | no | Opaque page cursor. See [Pagination](/docs/indexer/api). | | `limit` | query | no | Page row cap. See [Pagination](/docs/indexer/api) for the shared contract; the exact default and maximum for this route are on the schema. | | `order` | query | no | Sort direction: this route's accepted values and default are on the schema (`enum`/`default`); a route whose backing index has no reverse walk accepts only `asc`. See [Pagination](/docs/indexer/api) for the shared contract. | Block At [#block-at] ```http GET /blocks/at ``` Timestamp-to-block: both named bounds of a timestamp against one snapshot. | Parameter | In | Required | Notes | | ----------- | ----- | -------- | ------------------------------------------------------------------------------------------------------------------------------------------- | | `timestamp` | query | yes | `timestamp` is required and is Unix seconds; there is no default, because defaulting an instant would silently answer a different question. | Block By Hash [#block-by-hash] ```http GET /blocks/by-hash/{hash} ``` Block header by hash. | Parameter | In | Required | Notes | | --------- | ---- | -------- | ----------------------------- | | `hash` | path | yes | 0x-prefixed 32-byte hex hash. | Transaction [#transaction] ```http GET /transactions/{hash} ``` Transaction envelope, byte-exact. Plus `from`/`to`/`value` from the transaction-origin sidecar (`from: null` with `fromReason: coverage_unavailable | outside_coverage | unrecoverable` when it cannot answer) and `originCoverage`. | Parameter | In | Required | Notes | | --------- | ---- | -------- | ----------------------------- | | `hash` | path | yes | 0x-prefixed 32-byte hex hash. | Transaction Call Tree [#transaction-call-tree] ```http GET /transactions/{hash}/calls/decoded ``` The transaction's decoded call tree: ordered frames carrying ordinal, parent, depth, kind, from, to, value, decoded calldata, output, and revert state. Frames are the tracer's actual frames, not inferred from hooks, and a delegate frame's value is the tracer quantity rather than a claim that value moved. Coverage is explicit: a transaction with no retained call tree answers `coverage: not_available` with a reason rather than an empty frame list. Like every trace-derived route, this is built from node re-execution and is not verifiable against a block root. | Parameter | In | Required | Notes | | --------- | ----- | -------- | ----------------------------------------- | | `hash` | path | yes | 0x-prefixed 32-byte transaction hash. | | `cursor` | query | no | Opaque page cursor over call frames. | | `limit` | query | no | Frames per page, 1 to 64. Defaults to 32. | Transaction Decoded [#transaction-decoded] ```http GET /transactions/{hash}/decoded ``` Decoded calldata for the transaction, from hand-written decoders and verified-ABI bindings. | Parameter | In | Required | Notes | | --------- | ---- | -------- | ----------------------------- | | `hash` | path | yes | 0x-prefixed 32-byte hex hash. | Transaction Internal Transfers [#transaction-internal-transfers] ```http GET /transactions/{hash}/internal ``` Retained internal value transfers and contract creations, with per-transaction retention and reconciliation state. | Parameter | In | Required | Notes | | --------- | ----- | -------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `hash` | path | yes | 0x-prefixed 32-byte hex hash. | | `cursor` | query | no | Opaque page cursor. See [Pagination](/docs/indexer/api). | | `limit` | query | no | Page row cap. See [Pagination](/docs/indexer/api) for the shared contract; the exact default and maximum for this route are on the schema. | | `order` | query | no | Sort direction: this route's accepted values and default are on the schema (`enum`/`default`); a route whose backing index has no reverse walk accepts only `asc`. See [Pagination](/docs/indexer/api) for the shared contract. | Transaction Logs [#transaction-logs] ```http GET /transactions/{hash}/logs ``` Logs for one transaction. | Parameter | In | Required | Notes | | --------- | ----- | -------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `hash` | path | yes | 0x-prefixed 32-byte hex hash. | | `cursor` | query | no | Opaque page cursor. See [Pagination](/docs/indexer/api). | | `limit` | query | no | Page row cap. See [Pagination](/docs/indexer/api) for the shared contract; the exact default and maximum for this route are on the schema. | | `order` | query | no | Sort direction: this route's accepted values and default are on the schema (`enum`/`default`); a route whose backing index has no reverse walk accepts only `asc`. See [Pagination](/docs/indexer/api) for the shared contract. | Transaction Logs Decoded [#transaction-logs-decoded] ```http GET /transactions/{hash}/logs/decoded ``` Decoded logs for one transaction. | Parameter | In | Required | Notes | | --------- | ----- | -------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `hash` | path | yes | 0x-prefixed 32-byte hex hash. | | `cursor` | query | no | Opaque page cursor. See [Pagination](/docs/indexer/api). | | `limit` | query | no | Page row cap. See [Pagination](/docs/indexer/api) for the shared contract; the exact default and maximum for this route are on the schema. | | `order` | query | no | Sort direction: this route's accepted values and default are on the schema (`enum`/`default`); a route whose backing index has no reverse walk accepts only `asc`. See [Pagination](/docs/indexer/api) for the shared contract. | Receipt [#receipt] ```http GET /transactions/{hash}/receipt ``` Receipt including chain-specific L1 gas accounting. | Parameter | In | Required | Notes | | --------- | ---- | -------- | ----------------------------- | | `hash` | path | yes | 0x-prefixed 32-byte hex hash. |