# Kadena blockhash API

**Canonical:** https://apis.io/apis/kadena/kadena-blockhash-api/  
**Provider:** Kadena — https://apis.io/providers/kadena/  
**Base URL:** https://api.chainweb.com/chainweb/0.0/mainnet01  
**Documentation:** https://docs.kadena.io/api/chainweb-api

Kadena blockhash API is one of 16 APIs that [Kadena](https://apis.io/providers/kadena/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include blockhash. The published artifact set on APIs.io includes an OpenAPI specification and an API reference.

These endpoints return block hashes from the chain database. Generally, block hashes are returned in ascending order and include hashes from orphaned blocks. For only querying blocks that are included in the winning branch of the chain the `branch` endpoint can be used, which returns blocks in descending order starting from the leafs of branches of the block chain.

## Machine-readable artifacts (2)

- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/kadena/refs/heads/main/openapi/kadena-blockhash-api-openapi.yml
- **APIReference** — https://kadena-io.github.io/chainweb-openapi/

## Other Kadena APIs (12)

- [Kadena block API](https://apis.io/apis/kadena/kadena-block-api/)
- [Kadena config API](https://apis.io/apis/kadena/kadena-config-api/)
- [Kadena cut API](https://apis.io/apis/kadena/kadena-cut-api/)
- [Kadena endpoint-listen API](https://apis.io/apis/kadena/kadena-endpoint-listen-api/)
- [Kadena endpoint-local API](https://apis.io/apis/kadena/kadena-endpoint-local-api/)
- [Kadena endpoint-poll API](https://apis.io/apis/kadena/kadena-endpoint-poll-api/)
- [Kadena endpoint-private API](https://apis.io/apis/kadena/kadena-endpoint-private-api/)
- [Kadena endpoint-send API](https://apis.io/apis/kadena/kadena-endpoint-send-api/)
- [Kadena endpoint-spv API](https://apis.io/apis/kadena/kadena-endpoint-spv-api/)
- [Kadena header API](https://apis.io/apis/kadena/kadena-header-api/)
- [Kadena mempool API](https://apis.io/apis/kadena/kadena-mempool-api/)
- [Kadena mining API](https://apis.io/apis/kadena/kadena-mining-api/)

## Tags

blockhash

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/kadena/kadena-blockhash-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/kadena/.