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 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 0x4a1097462977ba71263243b1c66af3e33b3fab0b6f7fe55f18730b76681abcca. 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/77cd2f61-91e1-49c5-99b8-1abfb43f4804.json and https://artists.proofprofile.net/proofs/artist/77cd2f61-91e1-49c5-99b8-1abfb43f4804.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 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 0x04c6ce42649ad2ecbc3b8cb295acfabe6492408881eda9cf349c211dc3147b1f. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/DEM081600161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c6ce42649ad2ecbc3b8cb295acfabe6492408881eda9cf349c211dc3147b1f. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/DEM081600161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x304c66564c46cd6f787494721fe85414b4390bdc5072e96a54d42e73151c4bb4. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DEM081600162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7320d84c3a3a81a5f8b6a7b31633c4ce57a390e83be3d0269e61d4b6e7768be7. 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/DEM081600163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7320d84c3a3a81a5f8b6a7b31633c4ce57a390e83be3d0269e61d4b6e7768be7. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/DEM081600163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865658edd30aa8eef2c7e44736b7525d0a08e0e20bf3cfe4b910a5c0841f7d17. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/FR10S1748198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865658edd30aa8eef2c7e44736b7525d0a08e0e20bf3cfe4b910a5c0841f7d17. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/FR10S1748198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f3f6ecafa4539a75cca98fc0770eed9ae9eb76bce5ece6a94ad549484c5048. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/FR10S1748199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0eb94c5438cd4de4a46ad27970b0bfe04302d24b62c460aac4a7992237e1ea. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FR10S1799426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9512b209f25dc39eba3e106ea8c855f1ca6d48eff46daaca25b585b36e8dccae. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR2X41754035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9512b209f25dc39eba3e106ea8c855f1ca6d48eff46daaca25b585b36e8dccae. 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/FR2X41754035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa1e25787e9bdc19c89d42192c0b6296fd387e5d64e50780abfe4974acec9da. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/FR96X1723387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf653e7d4a0559b76835a3cbf1ce6397b8df3b53e7cefe3e22eff0bb0df5645ac. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/FR96X1723388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb334743b2dfd615174a9dd178406964b787a51bb2d66b9d5fc3a512c74a911da. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FRX201719402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e06f541543d0fdca9753efc328ddd4decd836d2018820b6a6b4b978f680d79. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/FRX201719403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb334743b2dfd615174a9dd178406964b787a51bb2d66b9d5fc3a512c74a911da. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX201719402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06fe2a0e3c9c9e4fcbbf5b389a7ca2db7c26ec85109b20ef75a87d48aad86a5. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FR96X1856588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x618836b2dd168b286a555d5fbb8ee0a1a573c516c778d1808de7248f3a3f6f9f. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/FR96X1856589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0ec843929b8af5dff42648cb2bfa40ea812ae76f4b3238a65f8c86778bb9aa. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEZC62287149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd8064feef4cb0f123963680a2fd3fcc4d77b10066b25aaecd0d60ff7e478adb. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/CH7812238383.
Belle (Original Motion Picture Soundtrack) [German Language Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a38ae307ff396048ea55c4f49e11d8354008baa3fdc960b25d0f8a2d5d53fe. 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/USQX92203440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b79e55a7c740edb62d2b534950bc19a4e19f829ad519cc3202d07632e058e79. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USQX92203444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd28641ba721d05e117bf74cf25627d5ee2cd071139934124f4462791536ac7d2. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USQX92203451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad48ee678db66da73367d4b212bac2c7be65007412b319e0994bb828f023492. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/USQX92203452.