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 0xd3670f6c07b8afe3b36d85968ba35eab3b22f2a726d22d2fe3404b0cb15e0fcf. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0e139aff-a99f-4beb-9cf5-973f18f2586f.json and https://artists.proofprofile.net/proofs/artist/0e139aff-a99f-4beb-9cf5-973f18f2586f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
I Mousiki Arhizei Ekei Pou Milaei I Psyhi
Laika Merakia (o Andros Georgiou tragoudaei Niko Patavouka)
O Andros Georgiou Tragouda Ioanni Alexiou Aprosklito