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 0x293f65cf4dca9d6cc4c1cf4deebfbb9fe11ee4a20646588d933aefdab8f2ede4. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/996a0166-e76a-4cd6-a366-82c4c2a7c585.json and https://artists.proofprofile.net/proofs/artist/996a0166-e76a-4cd6-a366-82c4c2a7c585.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 0x4429ae927967cbc29a54e5a57947eb01492894bbdedac3e7b2760fd366cbd393. 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/FR8Y72100271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a1bdeac94cb8a05b0cdd9e1020f9056552f8cd5807d5b255ff6f16b7a555b2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR8Y72000228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x528bc85eb65c3d5d930350cbf8eec0683818386585a32913f910a073e4b48766. 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/FR8Y72100257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435473148f159ab01f3935f328490e320b2ef9c2a347ed9da2ced62591a0c24a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR8Y72100265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c414284fb93b324ae4b542490f72b8652a9e55118d8f34ab9b6d31abd95071a. 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/FR8Y72100267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4429ae927967cbc29a54e5a57947eb01492894bbdedac3e7b2760fd366cbd393. 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/FR8Y72100271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343a988eb080ce7f1dbee60ec90abb460fa25ee5527ab3b50c5a60ee74681dcb. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/FR8Y72100273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee65a7d57479436dd35f84bbf217195801b07b328c4167fd40cf1b4fcdf253f1. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/FR8Y72100223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d1f306771fc42a138f0be808e88eafec2719855bc6f46e22d1e9905c2d3dafb. 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/FR8Y72100277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703cb0ecef948d447b25fc00222fed8e8dadc555a9e8e85640729e733afbd517. 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/FR8Y72100279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55043479deb70c3ebe2f7d5260f980797da1c46684862d68891a948c8723b9ec. 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/FR8Y72100299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4de1f0cf1342d3a0f0018be44ac32177b0f7fd85e7296ff99a7fa1884886337. 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/FR8Y72100239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa82e8f07cb540cd1e8e483bf363652e6946ef7470cdbc95f2e9c8cdfe91ba89. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR8Y72100303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9f772741abc99490fb636d7fa5c335b58107cb8bb2aad9ab4af95450993fdf. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR8Y72100309.