1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x34a097556b601c219844426804fb4b30607509ecf354fd564c95738bf8943db5. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5c4930a2-47ef-470c-acfb-c485f96894f1.json and https://artists.proofprofile.net/proofs/artist/5c4930a2-47ef-470c-acfb-c485f96894f1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Very Best of Kombi (Bursztynowa Kolekcja)
Historia w piosence. 65 lat Polskich Nagrań
{"copyright_id":"0xf36b760582cc625aecca186837cc87906def9fbac841370dc08f9e36e292362a","isrc":"PLA240500108","name":"Słodkiego, miłego życia","registered_at":"2026-06-11T19:23:15Z","spotify_id":"5xWpPC2aayZbIwVxqZhh3c","type":"track"}
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36b760582cc625aecca186837cc87906def9fbac841370dc08f9e36e292362a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5xWpPC2aayZbIwVxqZhh3c.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5xWpPC2aayZbIwVxqZhh3c.