---
title: "(Unstable) Get Cardano block and transactions set snapshot information"
method: GET
path: "/artifact/cardano-blocks-transactions/{hash}"
---

# (Unstable) Get Cardano block and transactions set snapshot information

`GET /artifact/cardano-blocks-transactions/{hash}`

Returns the information of a Cardano block and transactions set snapshot.
Using this endpoint require Aggregator's capabilities to include `CardanoBlocksTransactions` in the `signed_entity_types`

## Path parameters

- `hash` string, bytes, required

## Response `200`

Cardano block and transactions set snapshot found

- CardanoBlocksTransactionsSnapshotMessage — This message represents a Cardano blocks and transactions set snapshot.
  - `hash` string, bytes, required — Hash of the Cardano Blocks and Transactions snapshot
  - `certificate_hash` string, bytes, required — Hash of the associated certificate
  - `merkle_root` string, bytes, required — Merkle root of the Cardano Blocks and Transactions snapshot
  - `epoch` integer, required — Cardano chain epoch number
  - `block_number_signed` integer, required — The maximum block number signed in the Cardano Blocks and Transactions
  - `block_number_tip` integer, required — The block number of the tip of the chain at snapshot time of the Cardano Blocks and Transactions
  - `created_at` string, date-time,, required — Time of creation

## Other responses

- `404` — Cardano block and transactions set snapshot not found
- `default` — Cardano block and transactions set snapshot retrieval error

## Changes

- **2026-02-03** `1ae04002e930` — 1 info
  - endpoint added
- **2025-06-13** `1b81bf42f34b` — 1 breaking
  - api path removed without deprecation

[Change history](https://skmtc.dev/input-output-hk/apis/mithril-aggregator-server/changes/artifact/cardano-blocks-transactions/:hash/get.md)

---

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