---
title: "Get Nakamoto block by ID"
method: GET
path: "/v3/blocks/{block_id}"
tags: ["Blocks"]
---

# Get Nakamoto block by ID

`GET /v3/blocks/{block_id}`

Get a specific Nakamoto block (Stacks 3.x+) by its index block hash. This endpoint streams
the block data from the Nakamoto staging blocks database where Nakamoto blocks are stored
with additional metadata including tenure information.

**Compatibility**: Works with Nakamoto blocks only. For Stacks 2.x blocks, use `/v2/blocks/{block_id}`.

## Path parameters

- `block_id` string, required

## Response `200`

The raw SIP-003-encoded block will be returned.

## Other responses

- `400` — Bad request
- `404` — Not found
- `405` — Method Not Allowed
- `500` — Internal Server Error

## Changes

- **2026-01-28** `30468ca2533f` — 2 breaking, 1 warning, 1 info
  - for the `path` request parameter `block_id`, the minLength was increased from `0` to `64`
  - added the pattern `^[0-9a-f]{64}$` to the `path` request parameter `block_id`
  - for the `path` request parameter `block_id`, the maxLength was set to `64`
  - added the non-success response with the status `405`
- **2026-01-14** `f7f733b4a1fc` — 3 info
  - for the `path` request parameter `block_id`, the minLength was decreased from `64` to `0`
  - removed the pattern `^[0-9a-f]{64}$` from the `path` request parameter `block_id`
  - removed the non-success response with the status `405`
- **2026-01-14** `eb2153a4a3ad` — 2 breaking, 1 warning, 1 info
  - for the `path` request parameter `block_id`, the minLength was increased from `0` to `64`
  - added the pattern `^[0-9a-f]{64}$` to the `path` request parameter `block_id`
  - for the `path` request parameter `block_id`, the maxLength was set to `64`
  - added the non-success response with the status `405`
- **2026-01-02** `96224b968a3e` — 3 info
  - for the `path` request parameter `block_id`, the minLength was decreased from `64` to `0`
  - removed the pattern `^[0-9a-f]{64}$` from the `path` request parameter `block_id`
  - removed the non-success response with the status `405`
- …earlier changes not shown

[Full history](https://skmtc.dev/stacks-network/apis/stacks-3-0-rpc-api/changes/v3/blocks/:block_id/get.md)

---

[API](https://skmtc.dev/stacks-network/apis/stacks-3-0-rpc-api.md) · [All operations](https://skmtc.dev/stacks-network/apis/stacks-3-0-rpc-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/stacks-network/stacks-3-0-rpc-api/revisions/bfe6e0b30f62/schema)