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 0xb5599af7d75a046137e0a726ce1d15a0f872fffc2c35caf8be4800323c094f42. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d260426b-2c12-4f8f-b9f2-0d9649f9a5a8.json and https://artists.proofprofile.net/proofs/artist/d260426b-2c12-4f8f-b9f2-0d9649f9a5a8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Årstider - 4 sviter för stråkkvartett (Yggdrasilkvartetten)