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 0x47683cc631104bc7d8c2cbabcb8a160b0777ecaf20dc23680c46e1a4677d0d33. 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/1ba8c2e2-b0e4-450e-9c7f-b3354d1eb17b.json and https://artists.proofprofile.net/proofs/artist/1ba8c2e2-b0e4-450e-9c7f-b3354d1eb17b.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 0x5a4b609ecdc9327cea3a466a3beb13b3e28df5e984916974c30d2fa5073e9a1d. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/BGA671117238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55df4fbdf52c2f9dff89baffee2773351a89d12087fb493683e4ed7c41a8f49. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/BGA671117246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f8ca416baa903336df7523eb8ce4eed1fc036a30b94087c9584ea1f1e15549. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/RSA141312794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7804f6739a9ff2e5e9b9c95c8d0d5812231e241f0180bcf3df0d1537020b01db. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/RSA141312795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2bc24df43acdec240d39442dac43b3e13b1bd3687de9e79a85cd09f4964fb1. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/RSA222300757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62ca91ea922b856924f235f53382d97e50c57d3d6720ddb6f691cfc3e055628. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/RSA222300759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a4affb491729005cdf8928b9cdb299222e973c6606b99d7453ce8837304deb. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/RSA222300762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc140a1d05d6e198981f91f1fb24eb4d015b8268dc02ce83d75cdf11980137da. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DEQM91203298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c830cf093122404781be5900ad6ade3c5f6578fb4d6d6ed3673781bf74ff29. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/RSA141303345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e280a3ec5721133442fca5276ae016c80b180c62ea2873fdc0d67b04da8f3b8. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/BGA261199801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd93ce217488a1ba182dbc23a7afc919beb643d981b8b13254d0a3a24f5953343. Chain 2 (Bitcoin): anchored in block 957569 (2026-07-11T12:44:25Z), 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/BGA261199803.
Ljubav Mala Briga Velika (Serbian Music)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24be102dcbaa10a5a7d2a4e99ebe39ce7686c0658d50662d93c1463ca77d4260. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/ATAJ12100031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481138b1c352f2f97a26ab85e4f8efc5ee22730d4b5e5170674fe2fac24e5502. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/ATAJ12100032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb513a489d39ef65235ccb2587cddd5391328b0e7f4ba9c082d84c68fe95c6fea. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ATAJ12100034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e1089357d2ed0e9ae070d84c69061ba75363b033eaf3ec3ea104af09677bd4. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ATAJ12100035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b3f06df3ad24f61e1fa859de8b5f24b6d6c7b9ca8a501a877b79abd8d68205. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ATAJ12100037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b1d01d1acee62856c877c16642969a24960ea27f9fbd1306c82619f79b771a. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ATAJ12100039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68fb5ddf34509900671e8d8db36904c22140bb46c070d9c18e2ca52834794dac. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:55:51Z), 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/DEKB72426948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x172c36dba95a32162352aecba826a328ee357b71391a5bd3e6610652f138f2f3. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEKB72426947.