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 0x378cd78c60bd03052550df031b6c55da12dd2f53c7a3a7880d1fff62bd35276d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/73799ebf-d90e-4b8f-a0fb-d4beb63f7027.json and https://artists.proofprofile.net/proofs/artist/73799ebf-d90e-4b8f-a0fb-d4beb63f7027.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x7d025405a5db50a19e591764992a890e7bfe77ff882a86f121f77afcf2941904. 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/0U8O4azv6qaelQ7vfmNHDU.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/0U8O4azv6qaelQ7vfmNHDU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1c4fe227833c8723db6dfe83c382db1046eca8127fe85460c14ba20ff7db00. 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/3ojLSuFRTd03yjoZd10wIY.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/3ojLSuFRTd03yjoZd10wIY.
{"copyright_id":"0x6400cd83a39db1ab7ffa3ed876d66dee3e160d6f870b9157d12c9c938fac4319","isrc":"USV351497453","name":"No Kola","registered_at":"2026-06-24T19:17:44Z","spotify_id":"6UzWJWpbTrWXemBreaCnYz","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6400cd83a39db1ab7ffa3ed876d66dee3e160d6f870b9157d12c9c938fac4319. 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/6UzWJWpbTrWXemBreaCnYz.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/6UzWJWpbTrWXemBreaCnYz.