> ## Documentation Index
> Fetch the complete documentation index at: https://docs.checkpoint.exchange/llms.txt
> Use this file to discover all available pages before exploring further.

# Get Settlement Claim

> Verify that an offer was properly settled onchain and get a signature for a settlement transaction



## OpenAPI

````yaml /spec/oracle.json post /claim/settlement
openapi: 3.0.0
info:
  title: Checkpoint Oracle API
  description: Cryptographic verification of offchain claims
  version: 1.0.0
  contact:
    name: Checkpoint Support
    url: https://discord.gg/fJ5dJbxxTT
servers:
  - url: https://oracle.checkpoint.exchange
    description: Production Oracle API
security: []
tags:
  - name: Claims
    description: Endpoints for verifying claims and getting cryptographic signatures
paths:
  /claim/settlement:
    post:
      tags:
        - Claims
      summary: Get Settlement Claim
      description: >-
        Verify that an offer was properly settled onchain and get a signature
        for a settlement transaction
      operationId: getSettlementClaim
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/SettlementClaimRequest'
      responses:
        '200':
          description: Successful settlement verification
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/SettlementClaimResponse'
        '400':
          description: Invalid request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '429':
          description: Rate limit exceeded
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
components:
  schemas:
    SettlementClaimRequest:
      type: object
      properties:
        chainId:
          type: integer
          description: The chain ID where the settlement transaction occurred
          example: 42161
        evm_tx:
          type: string
          description: The transaction hash of the settlement transaction
          example: '0xabc123def4567890abc123def4567890abc123def4567890abc123def4567890'
        offerId:
          oneOf:
            - type: string
            - type: integer
          description: The offer ID
          example: '123'
      required:
        - chainId
        - evm_tx
        - offerId
    SettlementClaimResponse:
      type: object
      properties:
        success:
          type: boolean
          example: true
        claim:
          $ref: '#/components/schemas/SettlementClaim'
        signature:
          type: string
          example: '0xdef4567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef'
      required:
        - success
        - claim
        - signature
    ErrorResponse:
      type: object
      properties:
        success:
          type: boolean
          example: false
        error:
          type: string
          example: Invalid request
      required:
        - success
        - error
    SettlementClaim:
      type: object
      properties:
        nonce:
          type: string
          example: '0'
        expiry:
          type: string
          example: '1760896448'
        chainId:
          type: string
          description: Oracle verification chain ID
          example: '421614'
        settlementChainId:
          type: string
          description: Chain ID where the settlement transaction occurred
          example: '42161'
        account:
          type: string
          example: '0x000100000014d8da6bf26964af9d7eed9e03e53415d37aa96045'
        offerId:
          type: string
          example: '123'
        txhash:
          type: string
          example: '0xabc123def4567890abc123def4567890abc123def4567890abc123def4567890'
      required:
        - nonce
        - expiry
        - chainId
        - settlementChainId
        - account
        - offerId
        - txhash

````