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 0x67dd7fc4801b29cd00b21555e2286ddf22101d39391fce584d1b2f57e9fd58f6. 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/ce510d28-96e4-49cc-8e61-fe695e08a8d7.json and https://artists.proofprofile.net/proofs/artist/ce510d28-96e4-49cc-8e61-fe695e08a8d7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x4bee4b3b257007178ed8a3790619bddca84ca1f70f6193f89fea68da1ea8c59c","isrc":"QZK6Q2222342","name":"LONDON FEVER","registered_at":"2026-06-22T02:39:52Z","spotify_id":"66GtvyG2vWTCXStT3mnMYZ","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 0x4bee4b3b257007178ed8a3790619bddca84ca1f70f6193f89fea68da1ea8c59c. 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/66GtvyG2vWTCXStT3mnMYZ.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/66GtvyG2vWTCXStT3mnMYZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e22439b5c0d82c00f94f4ab45654b8cdc461826243d2755f8d7fc3f799e57b8. 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/3wjzOtZAhGR25cujyZT5C6.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/3wjzOtZAhGR25cujyZT5C6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa31012232305af4a28a5461adb435f648df9af0a08c6c0399867f10c4af938. 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/56ENUoPZ9Ex64EMQXW7wb5.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/56ENUoPZ9Ex64EMQXW7wb5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6fd7e6a5996bdcf4d09139f4aca2d2b99a127d522b7e75347b8d2f9cae84d23. 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/5V2YZCjla5M0NT2Gm0PIqK.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/5V2YZCjla5M0NT2Gm0PIqK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993fcb55f508e5ab2943b2726b87984601aa1365cded52d9b7f8c208142981e7. 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/74mfPY9S6MQK38xj3yAGG8.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/74mfPY9S6MQK38xj3yAGG8.