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 0xac375e959423bd88e800387c17ef715eab6c2108fe3a38792673fe3b6511c1ec. Chain 2 (Bitcoin): anchored in block 953773 (2026-06-15T10:40:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c62b904d-99cc-4a53-bccf-c83e5f2e0195.json and https://artists.proofprofile.net/proofs/artist/c62b904d-99cc-4a53-bccf-c83e5f2e0195.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 0x0740ac88e1c36f6d06576aa5bbf0afef0f6cd8968bb458957db785b6bc35a2e5. 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/USCGH1884697.
Pioneer Hymn Medley (Viola Solo): Come, Come, Ye Saints / Nearer, My God, To Thee / A Poor Wayfaring Man of Grief
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4c68f3f0ef0a24a74155a6718fb4ced38c0805023bb0dc408d5c9eb6b0384e. 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/USCGH1884704.
All Creatures of Our God and King (Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88fb457102237bdd15c0896473210cdbe89c2f32fb0cdf891cded494d4ebf189. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/USCGH1884694.
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 0xe27399c5a510efde2b5a906d056f8c93cc81b9e429f8db0b279e9b646e37641a. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/USCGH1884695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd560c578be79d9f64ae14541f23b9f9bdc7300e5a9c39701c1875ea0521ef8de. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/USCGH1884699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3d27347b46075b64042bf9f6bd85c24c53e7c24d0ed63e4e0e49f1755844f1. 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/USCGH1161064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2e3c8900e5f29aabdbe0fd3ddb1023cb964e9493f6338b84801ab12e10d278. 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/USCGH1161065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e9530e1162e44f2ad3689a2e30c06e43aec104ff4f3a1359ffcaed12dadc360. 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/USCGH1161066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9771771ca4095cf953816c594709e2a970436e5d483243c9f5d20dd0e7b86d6d. 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/USCGH1161067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c6ea0bf4101afae41e8dcedccd7fa6b12e8f246e283d34082acb9a323ccc94. 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/USCGH1161068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d614eb2bb90a2cedd96b7cada7c4717a0eebdbf0ee1007818e96c6b46c2bed. 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/USCGH1161069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf356d32a14570a0a199ba743abc0a03891d4a10199d7752ca9a04daf65c59f1f. 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/USCGH1161070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c16dece55d7a9e3ac9603e17e16ccb9b5b55a11993f35d871790abcf47d43c. 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/USCGH1161071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e55ea723bb6c01354f376dea7d80a4ca1cc7aebc328ab9dd36a93e40e97aa0b. 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/USCGH1161072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x480da34b351b4ff2b14be38a1be66a2dbaeec19eb523f75908d17f5d1d2e37e0. 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/USCGH1161073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650fc7a9f1500e19aaf7ab4ffe45d820b5687bab0296d576ba9de0f89c481a9a. 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/USHM81527154.