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 0xc3dbbc2ff1fa72c70bd6007bd9d136749fefe8452ae6dd592dbc49f832def531. 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/4dc4f2de-7612-41be-b8fc-021c2f422709.json and https://artists.proofprofile.net/proofs/artist/4dc4f2de-7612-41be-b8fc-021c2f422709.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 0x5bfaf3669e6e79376545a586c2efab4f70a8bdbd0d90a0b8cf39b9660a93910c. 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/5zCloxCEsKcXTT2xZZAkFH.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/5zCloxCEsKcXTT2xZZAkFH.
{"copyright_id":"0xbd6430a0a154e138cb14f9d190279e68bd1934b5e1ee8757145ba14bf0ca28f3","isrc":"USUM72309462","name":"The Winner Takes It All","registered_at":"2026-06-29T00:28:46Z","spotify_id":"55nPX0lgcWn8UKsUWlc8UH","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd6430a0a154e138cb14f9d190279e68bd1934b5e1ee8757145ba14bf0ca28f3. 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/55nPX0lgcWn8UKsUWlc8UH.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/55nPX0lgcWn8UKsUWlc8UH.
{"copyright_id":"0x21d1d54cefe3e6d81b1bef728422557d2f80ad67beca9fda70eb573958996780","isrc":"QZWFN2450096","name":"Lose Your Ego","registered_at":"2026-06-29T07:58:09Z","spotify_id":"5jrgebqzFjZAgdBSWOjdUM","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d1d54cefe3e6d81b1bef728422557d2f80ad67beca9fda70eb573958996780. 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/5jrgebqzFjZAgdBSWOjdUM.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/5jrgebqzFjZAgdBSWOjdUM.