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 0xd62f5afc6172e9df837bb6d44e6e05194f0f137709fc54a931f7df5e45e7ef96. 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/fd1b6ae1-5859-4b23-810b-508b9148d37b.json and https://artists.proofprofile.net/proofs/artist/fd1b6ae1-5859-4b23-810b-508b9148d37b.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 0x3fbc56d742c2957d3d4c8706f2550898686c693cb3c530c5306c8c09e37796f4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES71G2148790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc077ee89249dae0aad92c781dfe6a96495bea586c30bf1343ce0df76c1d710. 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/ES71G2148796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd94287210bd732ca0e3df512f0715161acd1007d40475052e75234438ef4cb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES71G2148795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x833eba54df2c7bba570ea2658a6b48ee570426128432326c3478f0e1b36d0c98. 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/ES71G2148793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ccdffeeffdc96fb7fb8385a93d249637e8ab8b060d2c0a90ba2f44fae8cbf9e. 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/ES71G2148789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda319347dcac7ee437ccc130b4ffd811d95b53964db03eee8ead389b8152811. 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/ES71G2148792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac6815e7fa8d535f5e91f08de0d9d5d3e6cdf582f8fdd5c63669d69942d9d8e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES71G2144454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6443f02ef79d819c801fe4f80979d7866fb517399e4bb653100d180c9108d638. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES71G2148337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d94c7fcadf1e7c509b0cd7706691c48e8fdd3ac8294db2635ee1d6c3773157. 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/ES71G2148791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcef0265f67f7b0ccbff5ed068396c25b0ca74428eed88ddc6d27d40815991a5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES71G2148797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c251df2700d29932e23861280e29df309714c3ff7d01c25a116c9c120196e5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES71G2148798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e1a4622fc9bd9739c474e24a42c4a8482794d56f2c79a7f7db35cfd88c6df47. 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/ES71G2148799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0195f5fa2f2cab57ca2fbb01fef5e52e6a9be0239a0b6ee2a2c71a39bfca8404. 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/QM4TW2099920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6443f02ef79d819c801fe4f80979d7866fb517399e4bb653100d180c9108d638. 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/ES71G2148337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac6815e7fa8d535f5e91f08de0d9d5d3e6cdf582f8fdd5c63669d69942d9d8e. 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/ES71G2144454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc20e223c83300053125e34ad57835bd06f7d9cc6fd33abddfdc7d9bc72132ebc. 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/ES5022202677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc20e223c83300053125e34ad57835bd06f7d9cc6fd33abddfdc7d9bc72132ebc. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ES5022202677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96dbf5789128c190a1ad1cee67491a9d5fa43dfa96323174971a6157bb1f142. 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/QMFME1991489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fde39d4d978df647a695953f6a8e8174f1fc6a6c50ff8d855efdfe28d060a2b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ES71G2030714.