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 0x129ea0c4196b21f418c14ba68116b184e6bb824fa03e9fb47cec33cee3e9ee83. 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/f773e8fb-9f42-4911-ba8f-bdab94f3bd7a.json and https://artists.proofprofile.net/proofs/artist/f773e8fb-9f42-4911-ba8f-bdab94f3bd7a.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 0x6584df501f112c70bb02fc03026ad173fe9a005088ad2fd5cd67e500118894a1. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/ITG232100230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf18f389116d85eadde8f382d8aa34c4661d262038e0cd1e05c219771ba360958. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ITG232100101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd53981e66741f8ccbc29835f8e98ebc7a3d93f00ebf12b3488b97f081d79af8a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ITG232000171.
Essential Songs, Vol. 2 (Music for Movies)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779fbd32e92c18027c73876963647c868c554d346be305426eca7057a8d6cf0e. 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/ITG231900144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22f34774f369184da660c9e90209bdd2b2a62f43dfbe43b0cd86fe8e7d43ee5. 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/ITG231900145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4932c56a2ec3f3bcd3254d9e24a4c20b866b76e3ed686e4d2e31ca019c09b91. 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/ITG231900146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61cc23f8dc62ed52aa6eb316949ba98edc74197241a7c04765132cf5a2b4392f. 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/ITG231700181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b44a14872b36088617c17ede134306ba00ab32d48e08e2d26a4dc15ac2b3342. 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/ITG231700182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd93cefa9a4282850403647b1e91d7bdeedd1c67e71f9b5aa9d6ab366edfb145b. 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/ITG231700185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd4ba78fe6e51d14e3f7039b68847dde9cd21bb8cd6e20c9d8f3afff8ebff784. 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/ITG232500021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd46656b869ea9ecbfe1d9e13b93319ea482f79e4828e6815798708bf0ea7090. 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/TCAIY2462285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c23392d363aab9e0cae7c5dbe6321381700965f71ba954d8dd73ef544f0a94. 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/ITG232400091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b7d3d9ae03c281ac36e9892daa6ab30a64d0fc853bbae335dd6aea9a6f2fbd. 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/ITG232400061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac49c4397b5fe1de04e3306a7b8b99ca65dd7bad732f3a148361c92bfbf2127. 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/ITG232300104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48148bacd888d6c87388e3ad88a66946cdbc767c54675920a9fadaa9d2585e55. 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/TCAGS2386084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2acc7614bd65df3f870de1dc6a7e37350948ad81aa6cbfca01fa37ee95e3a7. 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/ITG232200051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6584df501f112c70bb02fc03026ad173fe9a005088ad2fd5cd67e500118894a1. 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/ITG232100230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd53981e66741f8ccbc29835f8e98ebc7a3d93f00ebf12b3488b97f081d79af8a. 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/ITG232000171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcae7be7c35c7954d1c0815d6dcd374b011684e1cda78af67816becff46431591. 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/ITG232000041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e84534018a5a7c4a967d53f3f8568e67239186cd0372ad9ab81d91d95b9a209. 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/TCAHK2363413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ed7a1fcef9cc050b071ce05db5d25f9071065578328577334f3c01ff069db4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CH6542483351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d654f9a32ca597b7e7b74c03d54cd460221eb17c314c6371dd1120c6ba5146d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCAHZ2436162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc43f9bd3adef04ecd9f48bef498a375f827131b39aea74d9c37300ace4a115. 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/TCAIU2412497.