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 0xf98a5e44413098b04839db76c2872e4dc54b941d68da4fd8f47328daefc352e2. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/43a55af0-1021-4611-9e33-f4bc832dc5f2.json and https://artists.proofprofile.net/proofs/artist/43a55af0-1021-4611-9e33-f4bc832dc5f2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xe3afa26caead70168c83b75976caa89e06bb8b1bfdaf0efaefd68b8a354372b1","isrc":"BEY900800031","name":"Krakzo De Mattebom","registered_at":"2026-06-28T20:51:32Z","spotify_id":"6EJWdlZhO6lkXFtgdVWbNQ","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 0xe3afa26caead70168c83b75976caa89e06bb8b1bfdaf0efaefd68b8a354372b1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6EJWdlZhO6lkXFtgdVWbNQ.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/6EJWdlZhO6lkXFtgdVWbNQ.
Voorleesverhaal: Het Kasteel Van Koning Samson
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08af1e97ac8763c8461914a31898d0c16d796babcd47ea22490721e07a13757. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1AvkFTj39eU1D6RM3L7rSD.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/1AvkFTj39eU1D6RM3L7rSD.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b166dbdabc9c74de85f838fb030b5985dab8fe07f79bee035e543636c729fe9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7I0dbVO561sJ0kgsHxQesi.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/7I0dbVO561sJ0kgsHxQesi.