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 0xe2fa3ec8f352ad2b8bec773b2feed2057707c7e28ba6e0465c314ebe9796ed42. 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/b7e3549e-d747-49d5-a979-ae874a2fa43b.json and https://artists.proofprofile.net/proofs/artist/b7e3549e-d747-49d5-a979-ae874a2fa43b.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 0x93e869191b47be14aea04de6dca99c4b204c936d24f9a7254c4a983ce61ee8b3. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/DEAF75101128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7d61a9561f074bb578313461b45572fc015fe1ed093bb7ce517155b362b988. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEAF75101131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3e81d7f41e02e1100278a08bacce69b0782ad7e7fbc246544b9d95f4a8cbd6. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/DEAF71106194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ff81a4a7239a4d6d4bc2e28c995082d0cc461c0c14e9c98987222fda868e23. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEAF71106195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9242b32714c7fedd02499da0704d91993e487f8a00d54a705f347a6cacfcffa9. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/DEAF71106198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e24f8be93c98bdff9f6a6536c9de926f5ebdd409e77ada99d5972866ae96709. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/DEAF71106199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a31af6a7bfa0bcfbb0e354099617a0ae810c10d7893d837733183659f0f491b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEAF71106204.
Viktor Vogel - Commercial Man (2001) [Original Motion Picture Soundtrack]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5ecda358067920710502955cc5a8f2d045fcc141eba6a7e73a27b323bbfa18. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DEAF71106179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729d598a313b3beab79f82b7b3b0eff925fb5ddbd37215639cc4d1272d0d7c69. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEAF71106183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7a6a45413733d17bc897b82668d1d73b71d7361e56e98ba396e570d40df3d0. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DEAF71106184.
Snowblind - The Amalgamation of Soundz Out of Mind Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff058ebe53a1bcb8389df95a0d86537d1d338f82d1c425ec9025b47a7ba4634. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:05:37Z), 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/DEAF71106186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c60a93eb6f1e2debc8d53c486058157345968ec0600e004daf7dc8acc334e95. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/DEAF71106189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bfae1f3c04fa0e7a0e59f17136cf718a602bb99fd38f758de2317a65b5dbffc. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/DEM090900032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d79f7d9398db37da6681469422b2d3c27f96491bba4bf932774511e712b3182. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:41:37Z), 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/DEM090900035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6c34f0ca470ab3f0b7ab53b7f42ba2d4ad6f2522669aebe4daec06f6b433c0. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/DEM090900037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb76001a8208c784456f6428e3a4940cf4ad2b8713739c75e402e7f312f1f7220. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/DEM090900039.
Dance Into The Night (Energy 2011 Anthem)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa939b93549ceab4d1df4b835d3a89df8fae53997f969d7351ba87723d588d5cb. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:53:36Z), 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/DEAZ31701447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa58f8baca0f7dcf037da937530c2dc709919658e9c221b51a56bd0cd978182aa. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:54:39Z), 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/DEXN82431255.
Three Quarks for Muster Mark (Can U Feel It Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0acbefb32abbf5cde312c72e6b0b1ffe56552b5c5310744363a1274aa60d2e. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/DEXN82592904.
The Re: Work (Barrio Jazz Gang Vs Minus 8)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3779360f74f15bff7149318d8a5a140213a4e126e7e214b4035810eb1cdf58. 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/FR6V80769139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9be7e0b89ff9ddf4951df59957cb717b57f276883d23669036e0a6742ad41a3. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/FR6V80769140.
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 0x3d6f0697bea906968f1e8c752e54d98015e2f3c52621a5b4df704a97c2eb666c. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/FR6V80769141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5871155ef405e44821fad3b108ce01f79ef574a5d14f198da7c3fbe71b460322. 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/CH7812357176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1be0744850ac9f0fe9a65e5c94c98d6ac0f37ca3955d6bd9bba0b17260186e. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QM6N22283757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b85527303f13c18b348854fe97abe4525b154c1e6b8de2ca0c5647353957f83. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEF231000035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0562c41ab7df932350e988a01530affcfa5e34ec343c9233a96aa40508915d29. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/DEM090100025.