Blockchain Data

Low-level blockchain data access: blocks, transactions, traces, and logs.

Temporarily not served

Every route on this page currently returns 501 with code: "CHAIN_NOT_SERVED". Wallet transactions, balances and the chain tip (/v1/chains/{chain}/height) are unaffected.

{
  "status": 501,
  "error": "CHAIN_NOT_SERVED",
  "code": "CHAIN_NOT_SERVED",
  "chain": "ethereum",
  "chainId": 1,
  "servedChains": [],
  "message": "Route /v1/chains/{chain}/transactions/{txHash} is temporarily not served on any chain ...",
  "timestamp": "2026-09-28T15:00:00Z"
}

Get Block

Temporarily not served — returns 501 CHAIN_NOT_SERVED

This route currently answers 501 on every chain, with the body shown at the top of this page. Branch on code, not on the status alone, and do not retry on a backoff.

GET/v1/chains/{chain}/blocks/{blockNumber}

Parameter	Type	Description
chain*	string	Chain slug (e.g., ethereum)
blockNumber*	integer	Block number

Get Transaction

Temporarily not served — returns 501 CHAIN_NOT_SERVED

This route currently answers 501 on every chain, with the body shown at the top of this page. Branch on code, not on the status alone, and do not retry on a backoff.

GET/v1/chains/{chain}/transactions/{txHash}

Returns full transaction details including status, gas used, and decoded input data (when available).

Get Transaction Receipt

Temporarily not served — returns 501 CHAIN_NOT_SERVED

This route currently answers 501 on every chain, with the body shown at the top of this page. Branch on code, not on the status alone, and do not retry on a backoff.

GET/v1/chains/{chain}/transactions/{txHash}/receipt

Returns the transaction receipt with event logs and gas consumption.

Get Transaction Traces

Temporarily not served — returns 501 CHAIN_NOT_SERVED

This route currently answers 501 on every chain, with the body shown at the top of this page. Branch on code, not on the status alone, and do not retry on a backoff.

GET/v1/chains/{chain}/transactions/{txHash}/traces

Returns internal call traces (EVM debug_traceTransaction data). Available on chains with trace indexing enabled.

Trace availability

Not all chains support tracing. Check has_traces in the chain registry response.

Get Logs

Temporarily not served — returns 501 CHAIN_NOT_SERVED

This route currently answers 501 on every chain, with the body shown at the top of this page. Branch on code, not on the status alone, and do not retry on a backoff.

GET/v1/chains/{chain}/logs

Parameter	Type	Description
chain*	string	Chain slug
fromBlock*	integer	Start block
toBlock*	integer	End block (max range: 1000 blocks)
addressoptional	string	Filter by contract address
topic0optional	string	Filter by event signature hash

Returns event logs matching the filter criteria. Useful for tracking specific contract events.