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 0x0ca91c95e6c041d3c494736b69c3da1edf7332bf6a603351937a080a553e249f. 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/1e9afe98-b2a1-487e-9d99-6dbbdc1d8355.json and https://artists.proofprofile.net/proofs/artist/1e9afe98-b2a1-487e-9d99-6dbbdc1d8355.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 0x8cb3b0f2abed7b3fc045c88e61327624498dcf363f560c27678f895f444ae0af. 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/USNA10319545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a263f7ee6b32a4e9c43ac904121f260b9fc16cae3bb89ad19bc457e2fcd977. 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/USNA10319553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa88f5e2f54e41b6aa018ebf9a946d4aeab281ab727bcb7c06b143d9bec345e96. 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/USNA10319546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299751c7965d7f0fe07e486dacdbe4ed1119df44fddcfdd9c319aee4a281ef24. 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/USNA10319554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af7028fcaa5dd3d6d3d4a01e11f2da23c5373719db78ba857c3911f034a928a. 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/USNA10319547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1bb899e5a1d1131cdda8eb632cc13574bf45ad66b3ae947a8aab43f7ad055f6. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USNA10319555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7dc90d7413009344482422499f5e3ff5cc16722d34c0a73ff648f277de8180d. 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/USNA10319548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e9b8ce377cc8497dc42978cef64ad2ad64a6de07242861fdb9b5112f2c66ea. 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/USNA10319557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d55a4c8fdcd808685f8f2a8c066e63df541294d354ca873c408e910afc55e4. 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/USNA10319550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d98acef767d3ea876530c7c517b89d58b9aee07bca7f0b187cd5fbd0e8a344. 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/USNA10319551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd95bab7559c26f1071642d4fa5e938a5d369887d1f2a783935679c8a70f22b1. 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/USNA10319552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc069cf99ebf0297cfd2d524034e7f9005489e6c8c2f3786466f277c5937b983a. 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/USNA10319560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed15149a04f646ebca1719c9fdd1fec7f6dca4b60c54b5924554ce2b002193ba. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USNA10319561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c184f733882d3d0afcdc91abf2c57ab3485f03869ff6e9266f748b271379ab. 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/USNA10319562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90086e61e57cca9ff19383dedd9453e55f3232e502666e7d147f417b0b98db93. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:29:58Z), 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/USNA10319558.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e357ffe44c42d5173020f41606ad4e6c19773edf1694445fe2682678a697a6d. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USNA10319556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63568fbecb8c35f5a9544cef72e8e677a17e8475eeb18d00c8e37061bddc081e. Chain 2 (Bitcoin): anchored in block 960210 (2026-07-30T05:21:45Z), 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/USNA10319559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf263dc735c6c127ed466af5a2b2c765a02a5c6bd168e27b0b6901a3a67e4789e. 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/USNA10319628.
Narada Decade (The Anniversary Collection)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43830f37854e5b2e155f2d621cacf565783d0c68c385e1d35f3973372130f116. 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/USNA19611185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb34524fcd21af8d16bf88d8d135b2804bc9ad9cfda6c36f26687ce735cfc63d. 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/USNA19312013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81ddc431c18d452f7dc73a3288eb84a62827aeb429dc3912494adcd3c93dec7. 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/USNA18812224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e7e79ea79afb5f312dd8a6646056cb64764f5f3cd2b1ca497ded5e3ce42f29. 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/USNA18812232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e7e79ea79afb5f312dd8a6646056cb64764f5f3cd2b1ca497ded5e3ce42f29. 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/USNA18812232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda1a267eca5db8e8fa0f51f5fb8612b8a981fe19cae1d6189b5fdde6335922c5. 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/USNA19012405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0810c787839bac5d478bfc8665737759541759977e5451389f93fc078ba8908f. 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/USNA19212382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62b5c26d610b7080ac62c3266627a3f53162f0a89d293c1d8fea26889de0fe3. 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/USNA19212392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f70bc58d75e6d84c87667b229f99228732626de420a647279ae850b9ea163e8. 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/USNA18912249.