1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0xe347235c86b3b6a0230187ed43fde1093872657be3ec02b8708758fbb94e6e32. 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/c4e72750-390f-4885-994d-9fae15115827.json and https://artists.proofprofile.net/proofs/artist/c4e72750-390f-4885-994d-9fae15115827.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031ab04a9d863ebb0a43f0fc338d9b87be8d775b4c6172a340297a018620b9a4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEVSZ1903101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c743dc62e87b57cd2639e0ead72b24e550d504890196038643de0c5d141ccd. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEVSZ1804501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4f11e8555ac1985c780feadf9434e1625fc2e9250c30107c4a26498b0a0511. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEVSZ2000904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2adf96845bd0907e1e2087002c86f05f31dd319aa388976c26217263236bc19. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEVSZ2000905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf4d16a26e11b533b524dc24a8ffbf6b452726a3a927dc7fdf10b672c0fe905e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEVSZ2000901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285f409ea0d09067294dd0bb91b14400f996953ad7758eacd74c63292a4b4f64. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEVSZ1802301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd814ed25f93f2030b59f9e9a11457f34ac068b9833521b5cdc8083911fd942ed. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEVSZ2000902.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x948e240793fc5af90d827244a76fc0dded953009bb00c793f0401359344e90ed. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEVSZ2402201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b6c3a5ecfffe6aaf46d8f20eb8cce9416cab969ffc0b0e61807d34afb86c46. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEVSZ2302902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c6a6a8b2f3d6b811fb0992ce928fca7338ffcf74971a3b4050911b69b1ef7e7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEVSZ2302901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e7a461466db84af47388c1f1dac9f2a9b9a6c703ffaf3f5f0ba19787c27f2d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEVSZ2202401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c184ad79c0401cce9aa1f8d185faf737a179b0e492356cd051167369c13d55. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEVSZ2102103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef4ba2a7cc3a75e803132696c85fb6c90631555cb7d48fe8b904570d811f75a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEVSZ2102101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa261f9315365b7438ca5e16c96d6e1a532f03426829a1be43f1db0ab10c0de20. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEVSZ2102102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd814ed25f93f2030b59f9e9a11457f34ac068b9833521b5cdc8083911fd942ed. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEVSZ2000902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf4d16a26e11b533b524dc24a8ffbf6b452726a3a927dc7fdf10b672c0fe905e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEVSZ2000901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031ab04a9d863ebb0a43f0fc338d9b87be8d775b4c6172a340297a018620b9a4. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEVSZ1903101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c743dc62e87b57cd2639e0ead72b24e550d504890196038643de0c5d141ccd. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEVSZ1804501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285f409ea0d09067294dd0bb91b14400f996953ad7758eacd74c63292a4b4f64. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEVSZ1802301.