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 0x5d547e53673009377abf199c37bc11c7d3008601943592b7d306b460b8394d2d. 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/90bebc94-58e2-4bc8-a797-4c8ff7f1f2f3.json and https://artists.proofprofile.net/proofs/artist/90bebc94-58e2-4bc8-a797-4c8ff7f1f2f3.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 0x81eac9bdbd12f89003b5631ea9f34613026e0845a31b2eaa6e08640762ed25f9. 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/528Vx7BrSeVlRHHFgZgj7P.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/528Vx7BrSeVlRHHFgZgj7P.
{"copyright_id":"0x0358b08894f1bebb08b037b30c07177f718fbbf659b644dbb2ef5950284cffda","isrc":"TCAGX2349397","name":"Bad Dreams","registered_at":"2026-06-29T04:22:30Z","spotify_id":"2aqcbJZvJLvZK46kNhfx9h","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0358b08894f1bebb08b037b30c07177f718fbbf659b644dbb2ef5950284cffda. 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/2aqcbJZvJLvZK46kNhfx9h.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/2aqcbJZvJLvZK46kNhfx9h.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe46a4a3237f12f79b244826171f636f8dbd464d53aa70fb138602e9fa38116dd. 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/6FFmyC0ufjIoPNnTGLSPRK.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/6FFmyC0ufjIoPNnTGLSPRK.
{"copyright_id":"0x4e5a75cfef4be1f1370aa2b0e2977886be5567240a73c659c8374f9ddce26cd6","isrc":"QZ8RV2100018","name":"PURPLE PUNCH","registered_at":"2026-06-24T19:46:43Z","spotify_id":"7GnldweGXe1qM99LEebOMX","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5a75cfef4be1f1370aa2b0e2977886be5567240a73c659c8374f9ddce26cd6. 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/7GnldweGXe1qM99LEebOMX.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/7GnldweGXe1qM99LEebOMX.
{"copyright_id":"0x4e5a75cfef4be1f1370aa2b0e2977886be5567240a73c659c8374f9ddce26cd6","isrc":"QZ8RV2100018","name":"Purple Punch","registered_at":"2026-06-24T19:46:43Z","spotify_id":"3KgOidGiRAjcoGiVXGmet5","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5a75cfef4be1f1370aa2b0e2977886be5567240a73c659c8374f9ddce26cd6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3KgOidGiRAjcoGiVXGmet5.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/3KgOidGiRAjcoGiVXGmet5.