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 0x091f7796f3b16b8d0d8dceee1c04d5283c15e03ee2256f54fbb28f509370e57e. 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/b1e4be47-5640-47b6-a549-76b51c4d87e8.json and https://artists.proofprofile.net/proofs/artist/b1e4be47-5640-47b6-a549-76b51c4d87e8.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 0x8d169ca80b28b4d5f536cbf6dfc27de79c026501f1405557d7ccd5c41b71990c. 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/NLRD51953698.
Impossible (Acoustic Covers of Popular Songs)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6fd080d55bcda5b11843fb29f5ce08032f7bfa599dd4afb6c413eb99c19a48. 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/NLRD51953699.
Before You Go (Acoustic Covers of Popular Songs)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1518a70fbb8348ab3d62cfba64107701fb6f4c2ec43b481933f5637e89349e. 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/NLRD51953695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9dcdf64eb5e5283f670a8b4ca17721f747b838a12130b60a04a24833d0fbed7. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:32:17Z), 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/NLRD51953696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe38cd214c9535eaf029fcfde4ec0661f50ebdd998260a9855aa7e7a50aa23fc4. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:22:05Z), 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/NLRD51953711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff725e8a5a7744e1ae68dbe88caa4d8feded0a6188305e7eb3b8ed870deb0a9. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/NLRD51953734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7036631bafd8807c1c55b4b0aa31dd053e4cf5c3e70a3a4d5b27c82ce8ce06b5. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/NLRD51953735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39d5b3ce36ed53322bdf48d734517a925a50728974dd19d13d255722e183624d. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/NLRD51953736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c418e2d210c6caa151689afb046ee8d8b4f7c0d361f25cf4601685e6c7ee4fa. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/NLRD51953737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc81e5874a7b48e272a2b3659783998dbfb82cfe1f9486d4b821b08fe3c5f678. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/NLRD51953738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af8a4315bedcfd7f9725497de1f63af69e92fef6e1af50364910650cc3e837c. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/NLRD51953739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca308605ad30985e7bcb237568a9cce9fd47d637fd3ca214d0cf14be15d55ccc. Chain 2 (Bitcoin): anchored in block 957961 (2026-07-14T05:58:47Z), 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/NLRD51953740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47065b43ae78a681aa79a949f6e3728f233daac3ca414f896af815acab6ea0f3. 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/NLRD51953741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9b7c4f0991bd804d358925d89292280d0f6f0477deddd7c2a1e77b34b78419. 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/NLRD51953742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0c68d1f2a8c048b86b02b0a23fde533a87b175b7a887e7ace76247e9c156b2. 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/NLRD51953743.
Bedroom Covers Vol. 2 (Acoustic Covers Versions of Popular Songs)
Lonely - Acoustic Covers Versions of Popular Songs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa50b37eafbafd406cf381d202341a38a99da33adb8e36b0adb89d8cf4990b3. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:08:10Z), 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/NLRD52017583.
Heather - Acoustic Covers Versions of Popular Songs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27c361704e0467759641bd513755a86c62e985db02c67fee1fec50b1db0d6c2. 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/NLRD52017584.
Therefore I Am - Acoustic Covers Versions of Popular Songs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf97a4a1617b0f10e1a9cd5131ec7b7a1555277ba8cf7ae4e38d7d7aba10270b. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/NLRD52017585.
Supalonely - Acoustic Covers Versions of Popular Songs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb3dab42c2705c0b77ab0d6c73b2952c821d071c5908d8c52fd69e180888bc6. 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/NLRD52017586.
Dynamite - Acoustic Covers Versions of Popular Songs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d0f531655bf1fd5b925dbeaa5efcef8f90dc12a888391580e0e1e1d6d6d4d2. 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/NLRD52017587.
Prisoner - Acoustic Covers Versions of Popular Songs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf909f66860586f689e8acf434d73438d3f44bb25db16a7aeca8526f2524a82a4. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/NLRD52017588.
positions - Acoustic Covers Versions of Popular Songs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda1c5935d88a9fa1c7c1e3dc1bada5db06d922d8734270c302f448bf6b734715. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/NLRD52017589.
Rare - Acoustic Covers Versions of Popular Songs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82a33b6d06aaab8bcc8a15ea8ab3a028d0aa949466f2710518b310e489e2e7b. 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/NLRD52017590.
Finally // beautiful stranger - Acoustic Covers Versions of Popular Songs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc7d53d30592af978c98ff808a71535c95d302a462b7eca9cf3735e287b6d3f. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/NLRD52017591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b54afe983013551e2957a73dc48be9974c1962f37eb129478967aaced996b03. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:45:11Z), 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/UK6KW2100812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c145fb5045f3c9e77f2959829a5f6d64f3417e5bf43733afb2816678d56aa7. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/UK6KW2100814.