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Request execution rewards claim message

post
https://api.contributiondao.com/api/v1.0/ethereum/message/claim-reward

Generates a challenge message for the custodian to sign, confirming the intent to claim Execution Layer Rewards (MEV & Priority Tips) for specific validators.

Important Logic:

  1. The user sends a list of publicKeys.
  2. The backend verifies that all provided public keys belong to the same Withdrawal Address.
  3. If valid, the backend returns a message that must be signed by that Withdrawal Address.
  4. Once signed and verified (via /ethereum/message/verify), the backend will trigger the claim transaction.
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