Celso Piña Arvizu (April 6, 1953 – August 21, 2019) was a Mexican singer, composer and accordionist, mainly in the genre of cumbia, being one of the most important musicians in the style of "cumbia re
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b33a6458c8603ed7a075c37069522bd98d941251ce35444c304c7f9f467dd9c. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/06373959-4454-4948-aff6-e003564cec95.json and https://artists.proofprofile.net/proofs/artist/06373959-4454-4948-aff6-e003564cec95.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).