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 0xa985785fa7a00ca73bb56960cd34c62d8bb2e5761b9c877294ade0ef4ef8def7. 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/47e81a96-add8-4473-bec7-5fc1b41ac2d2.json and https://artists.proofprofile.net/proofs/artist/47e81a96-add8-4473-bec7-5fc1b41ac2d2.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 0x1fb9dbb2527565cf0088b0b62b966cf94cc451edcb994754e6edb3d88a90cb97. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1IhlL7QWUmXmjqhjiDx986.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/1IhlL7QWUmXmjqhjiDx986.
{"copyright_id":"0x62a81ec913b90c47be87b87a15de41b7a5d5eb4484a16abf9d1eb957cebe9d60","isrc":"PLC060800305","name":"My Music Song","registered_at":"2026-06-04T16:34:47Z","spotify_id":"3O0x5GWk1tsm8FYOLqL9uY","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a81ec913b90c47be87b87a15de41b7a5d5eb4484a16abf9d1eb957cebe9d60. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3O0x5GWk1tsm8FYOLqL9uY.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/3O0x5GWk1tsm8FYOLqL9uY.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6a2b8304c22b0ad988c4b1afedfa417fb1286a983b30d4418e789d6d58943d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/50fqHIjTlm0bWWHuZJejsF.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/50fqHIjTlm0bWWHuZJejsF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd184900038f4ffa662cab8bfae3920060f472d58ba19a6a4553a2ff825c3acf0. 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/7Bi5K5iMbwhlADTqz3ScWV.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/7Bi5K5iMbwhlADTqz3ScWV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b99cbc1b39c63cf15300ffe060297f344cd3f1ae8d5cd1b85894becfcd661d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0mo9SVM0Yu60ZKm0SzmWL0.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/0mo9SVM0Yu60ZKm0SzmWL0.