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 0xdb2c5504f826e36892d6b9afa4c535e2ee03c31dc3bd7b37f80467a9e1dcf070. 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/bd2551d9-b575-49b0-8d52-8bc0debe8b62.json and https://artists.proofprofile.net/proofs/artist/bd2551d9-b575-49b0-8d52-8bc0debe8b62.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 0x5042189d3dbeb53cd7163a1cf54964ba085f4a182466640a87b9b4588123dd84. 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/NLC242100120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb4673a8dd272f677a84a69490f3903088fc270a14395832dc29ba5b66a21a63. 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/NLC242100136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe934f38571140c92df3e0f5b45f7ab90455e66a4a8b32e35b54b6cdd548495f8. 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/NLC242100068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d539826edaf04ef53d8c7ec36e938248e7ad77ca5ffcbcc2fbfdabd09371f5. 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/NLC242100138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc329244afb487e9fb75c9b68fd427dae8eeeb6e5fca1db74e50cf74e48cb5651. 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/NLC242100140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c67f62a868c8fb0ac4d0a02dddce585ba50b1282235b2fadcd0c3dac7efe01. 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/NLC242100141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52aa72d6b5c515c8e895dff484015e57472800caf9cbe8661473f5c274b55411. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/NLC242100142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8f9157f51a55bf73ce87a1b8026aa80f186f9ba83cd0152dba48315b3c8ba1. 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/QM24S1844850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c9d3031c991bb99adebcf1201fa9bc5169db36b1c62dfe3c1b67c7425ebcde. 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/QM24S1844853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af50afdce67da55afcc2a06eff48b56ba77df12f65f67a45e16928f8f81e53f. 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/QM24S1844854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40dfc535b0b61f4ce8107a1c881eb86c41bb86d7d7a070a77567fe6eabd9f57d. 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/QM24S1844855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x933fb4dfe004c6c9d99c595e6d9021025936b88687535dc827c5a57eec3cbd8e. 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/QM42K1885448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x622f91a7756547c88c6b744d5ee1caff9e0c7526bde5699aff4172a7bc05bc20. 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/QM24S1844859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa047161297fd50aacca20e96f60cff6df4ecda3b720c65a567b841a43754c7. 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/QZS642265520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44f858bb729c17c54005b638c7e8f38e46f8b51bead4d672cc67553176cab51. 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/BEN582200514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5042189d3dbeb53cd7163a1cf54964ba085f4a182466640a87b9b4588123dd84. 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/NLC242100120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe934f38571140c92df3e0f5b45f7ab90455e66a4a8b32e35b54b6cdd548495f8. 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/NLC242100068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7068edcc4495fd8a3069a17f778d534ad0988dd4445863caf14e48d766787e49. 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/QM6XS2002598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46c5d715fc193353a108d3a97dc7a7d312ac980d6094ccd58a9fad921b96a3d. 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/QM42K2076161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf0351ba687a040e679444c50bd714715f0eaadffc00489ef678e4cdebbcffd. 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/QM42K2021351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc770e583d2144d1a04a5a7eb302efae07e366011a321007d34b2c9bb6cc53fce. 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/QM42K1916047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045ecb72cd974645ff626fc86fac5c80a395d9418fe92dfae2c4a7a323b0f368. 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/QM24S1916354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d93b84fa05ccbf76e0b378c9f2e92b6fba298b1546deb94671f839de132dc17. 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/QM24S1912926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2277dfd54b66736b95f5825d90801a1179a4ee1af130e6f39fdad66a7ee71699. 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/QM42K1828864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd918d7d892bd32fa4391310c0f1d1d592ece5cad247011820dabe76e77297b41. 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/QM42K1878228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856544a126432085777b36c739abd280125ed8a5a66512d73e150851e27bf1b7. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QM42K1709920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0578abbca23822ddf498c92d0a88041ad37c30478d107177a0a4e487c633442f. 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/QM42K1752326.