Ciro Pessoa Mendes Corrêa (12 June 1957 – 5 May 2020), also known by his Dharma name Tenzin Chöpel, was a Brazilian singer who was one of the founding members of the influential rock band Titãs. He wa
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 0x77b4c21a2ada525cf83b06bfa85eb4665f1502b583fd463d66d7532a68e0f75b. Chain 2 (Bitcoin): anchored in block 954659 (2026-06-21T06:14:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dd861a7d-b75c-4f13-b30e-444754a3174c.json and https://artists.proofprofile.net/proofs/artist/dd861a7d-b75c-4f13-b30e-444754a3174c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).