Marcelo Mendes may refer to: Marcelo Mendes (beach soccer) (born 1970), Brazilian beach soccer manager Marcelo Mendes (footballer) (born 1979), Brazilian football manager and former player See also
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01f43e7e55caf8858c227ed9f0524e2a371d876b35de92a63a5a12d3c256d0a. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/15f021e6-73f5-46f8-957c-06bc9f5e7a2a.json and https://artists.proofprofile.net/proofs/artist/15f021e6-73f5-46f8-957c-06bc9f5e7a2a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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