POST Verify Merkle Proof

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OVERVIEW
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Endpoint: POST /api/v1/proof/verify
Method: POST
Authentication: Not Required
Rate Limit: 100 requests/minute

PURPOSE:
Verifies a Merkle proof before withdrawal to ensure the commitment exists in
the pool's Merkle tree.

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REQUEST BODY
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{
  "poolId": "cipherx-bsc-01",
  "commitment": "0x7c5b3a1d9e8f0c2b...",
  "leafIndex": 847,
  "merkleProof": ["0x9f8e7d6c5b4a3210...", "0x1a2b3c4d5e6f7a8b..."],
  "merkleRoot": "0x5d4c3b2a1e0f9d8c..."
}

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EXAMPLE RESPONSE
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{
  "success": true,
  "verified": true,
  "poolId": "cipherx-bsc-01",
  "rootMatches": true,
  "proofValid": true,
  "canWithdraw": true,
  "message": "Merkle proof is valid and ready for withdrawal"
}