> For the complete documentation index, see [llms.txt](https://docs.stacks.co/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.stacks.co/reference/api/stacks-node-rpc/mining.md).
# Mining
Endpoints related to Stacks block production and mining.
## Validate a proposed Stacks block
> Used by stackers to validate a proposed Stacks block from a miner.\
> \*\*This API endpoint requires a basic Authorization header.\*\*
```json
{"openapi":"3.1.0","info":{"title":"Stacks 3.0+ RPC API","version":"1.0.0"},"tags":[{"name":"Mining","description":"Endpoints related to Stacks block production and mining."}],"servers":[{"url":"http://localhost:20443","description":"Local Stacks Node"}],"security":[{"rpcAuth":[]}],"components":{"securitySchemes":{"rpcAuth":{"type":"apiKey","in":"header","name":"authorization","description":"Plain-text secret value that must exactly equal the node's\nconfigured password, which is set as `connection_options.auth_token`\nin the node's configuration file.\n"}},"schemas":{"BlockProposalResponse":{"description":"Get Response for Block Proposal","type":"object","additionalProperties":false,"required":["result","message"],"properties":{"result":{"type":"string","enum":["Error","Accepted"]},"message":{"type":"string","description":"A message describing the result or error message."}}}},"responses":{"Unauthorized":{"description":"Unauthorized. Invalid or missing authentication token.","content":{"text/plain":{"schema":{"type":"string"}}}},"InternalServerError":{"description":"Internal Server Error","content":{"text/plain":{"schema":{"type":"string"}}}}}},"paths":{"/v3/block_proposal":{"post":{"summary":"Validate a proposed Stacks block","tags":["Mining"],"operationId":"postBlockProposal","description":"Used by stackers to validate a proposed Stacks block from a miner.\n**This API endpoint requires a basic Authorization header.**\n","requestBody":{"required":true,"content":{"application/json":{"schema":{"type":"object","required":["block","chain_id"],"properties":{"block":{"type":"string","minLength":400,"pattern":"^([0-9a-fA-F]{2})+$","description":"Hex-encoded block data (must be valid SIP-003 serialized block, typically 200+ bytes)"},"chain_id":{"type":"integer","minimum":0,"description":"Chain ID for the block"}}}}}},"responses":{"202":{"description":"Block proposal has been accepted for processing.\nThe result will be returned via the event observer.\n","content":{"application/json":{"schema":{"$ref":"#/components/schemas/BlockProposalResponse"}}}},"400":{"description":"Bad Request","content":{"application/json":{"schema":{"$ref":"#/components/schemas/BlockProposalResponse"}},"text/plain":{"schema":{"type":"string"}}}},"401":{"$ref":"#/components/responses/Unauthorized"},"429":{"description":"There is an ongoing proposal validation being processed, the new\nrequest cannot be accepted until the prior request has been processed.\n","content":{"application/json":{"schema":{"$ref":"#/components/schemas/BlockProposalResponse"}}}},"500":{"$ref":"#/components/responses/InternalServerError"}}}}}}
```
## Upload a Stacks block
> Upload a Stacks block to the node for processing.\
> The block must be in binary format and associated with the given consensus hash.
```json
{"openapi":"3.1.0","info":{"title":"Stacks 3.0+ RPC API","version":"1.0.0"},"tags":[{"name":"Mining","description":"Endpoints related to Stacks block production and mining."}],"servers":[{"url":"http://localhost:20443","description":"Local Stacks Node"}],"security":[],"paths":{"/v2/blocks/upload/{consensus_hash}":{"post":{"summary":"Upload a Stacks block","tags":["Mining"],"operationId":"uploadLegacyBlock","description":"Upload a Stacks block to the node for processing.\nThe block must be in binary format and associated with the given consensus hash.\n","parameters":[{"name":"consensus_hash","in":"path","required":true,"description":"Consensus hash (40 hex characters)","schema":{"type":"string","pattern":"^[0-9a-f]{40}$"}}],"requestBody":{"required":true,"content":{"application/octet-stream":{"schema":{"type":"string","format":"binary","minLength":1,"description":"Binary-encoded Stacks block"}}}},"responses":{"200":{"description":"Block upload result","content":{"application/json":{"schema":{"$ref":"#/components/schemas/BlockUploadResponse"}}}},"400":{"$ref":"#/components/responses/BadRequest"},"404":{"$ref":"#/components/responses/NotFound"},"500":{"$ref":"#/components/responses/InternalServerError"}}}}},"components":{"schemas":{"BlockUploadResponse":{"type":"object","properties":{"stacks_block_id":{"type":"string","description":"The ID of the uploaded block"},"accepted":{"type":"boolean","description":"Whether the block was accepted"}}}},"responses":{"BadRequest":{"description":"Bad request","content":{"text/plain":{"schema":{"type":"string"}}}},"NotFound":{"description":"Not found","content":{"text/plain":{"schema":{"type":"string"}}}},"InternalServerError":{"description":"Internal Server Error","content":{"text/plain":{"schema":{"type":"string"}}}}}}}
```
---
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