Mexican tenor Jesús León is an operatic tenor specializing in the bel canto and French lyric repertoire. He has appeared in leading roles at opera houses and festivals in Europe, North America, the Mi
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 0x0c034fcc9f2a355ad1463ca2d1d8e97c24ba857b67ff52e1f8d3e32a032f8b60. Chain 2 (Bitcoin): anchored in block 954058 (2026-06-17T06:34:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/44cc8e3b-0d7c-432c-840e-3c30616acb1d.json and https://artists.proofprofile.net/proofs/artist/44cc8e3b-0d7c-432c-840e-3c30616acb1d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).