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 0x8aa7bf081e25730b38fb9bfe44b777bdcf0822fd9db8949e14306722d84433e4. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8a9f63a0-3740-43d8-83e7-4782a330ded6.json and https://artists.proofprofile.net/proofs/artist/8a9f63a0-3740-43d8-83e7-4782a330ded6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Entre Fantasmas, Problemas y Penas, Vol.6 (Al Pizarrón Del Rock)