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 0xdb1aca65869de972c83eb99b84d5809de520d746212db31473b65bdce0c30794. 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/09a7ee45-fe03-4208-a5b6-7f6951298c66.json and https://artists.proofprofile.net/proofs/artist/09a7ee45-fe03-4208-a5b6-7f6951298c66.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 0xd53102bc82cbbb61aca878d9052efa8d4441907bd750ee4fb96ba98dc6879aba. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:13:34Z), 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/DEH741810947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6999896fb9310fa29afb621cd85ba5ad658c8e91dea822508b1f3e3291c6539c. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/DEH741900517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34633f7c3bd48e04f25fa5f2b1214270b5fdd333fde3be1dcfb32dd21e06d8b6. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/GBLV61924543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d3f9379f231c60cc7dc13e292d0a47e83ac460924b3751f6f949fac92f585c. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/GBKQU2017862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72fc4601f9f09d1faefe6eeb751c82f9ffa19a3469affd87244653fc550fe1e9. 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/GBKQU2082241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f46ac8108f1d76f02615ddcaa3ce57d7a9172ccdda8be33c9f410b5c0b44bb. 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/GBKQU2077296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ecca8228a0227371a4c76786af0bfec65d73a40ce788fec19e326281301b448. 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/GBKQU2077297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a6886c1ab1ef24305e7b5a1dee8f8a7a1552f2340e6f3e08836a12f64568d56. 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/GBKQU2110666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c96ea854318c93e325aba5d3d2fa5480fd61b0f91dab9afa4c9becea4af0f6. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GBKQU2252053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf5cc9c9a6cee2ecbcc7e1a060f424e9c44b2a4c6b81ae1564697993253fbca. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/GBKQU2252829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4216f753e94a32ca5a513f42c29e310615a3d3eddf93f6580217a89775ea02b. 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/DEH742224648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323ec2c348b5ab3ceb9490c65ca780904755536b144cb0a3ec931269ed5ed62d. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/DEH742227338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4888e24ae78bf43c0a08bd52cb8031ea6eedb2d51d99712b6803ee07c9841ba6. 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/GBK6Y2251571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd162c9321f8feffa9d71824037aaa87591dfc2565ce593883c646738bbbf720f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBKQU2322801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe40e4056e61910d4e40adab22d99db6e68a2d4b4ee1cdfa71d9f207357f83c8f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEH742327898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c5b9f2b0fcf45f03e2ac1e17c46c53215f0e813f4a2b14f89a4ea52e230977. 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/DEH742402673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd401fcd38d776764d389fb75e520b0fadf4b4dd5e94d68bacd112dc854600b6. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:26:45Z), 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/DEH742428311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1644fc1cb910e3ec9ff2861609c3c8476708d5bb681df0cf0d8e4f66cd6335c2. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:47:37Z), 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/DEH742435085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26fc079aacff0be418659d7ced667a78dcca6b52091dbfec5ddf0f224e15f6a8. 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/DEH742435087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce597ad0245b8131caf1138cd60e9237487bddc5a812e4c361b950c6a7047a6. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/DEH742501128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe451af2d795779f10f6b9776135d7d24e9c374faeb68efb63a463d22969c0159. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/DEH742501130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b630af8b059660562e328efdca8e1e77ee2cc344188a7184fcfe9fc8925d213. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/DEH742501906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa314b2bfceeade87771e16ccc8fb2a789b46e15c48cede6b62b99af3b179106a. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/DEH742502253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3f0160df6bfc9b53bdb263aee75867f9d613564de435f0627b05292a89de29. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/DEH742501135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86d24700db4190d2740587b38325edc33d83c2137389aac2bd4a5399b0a231c. 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/DEH742501602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80408df8f03685ba9bc3767b9291cb94ff5e79f14c837c3968a76279b5bb1818. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DEH742501268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8db85ab22ae5db6d55fa45a36b154d82f371e1f40dff65a013690e0ea3d3cd8. 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/GBKQU1928739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc40419a976f55f0db914e8a706c2a69e3c4f04e8ba6c0f3de6c90de2c9546b3e. 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/GBLV62028303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf541349e1c78f7665e47f792d62f975526e0a2c7d6c3aab72299e173e22c8458. 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/GBHAD1700179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2099b1781a409b54f3e48bcc0143ad88109025bbbf77ba0a4ad1fc1cf3aa9e5e. 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/ES94G1812622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe909bf3c630f3804f0f8f6a16980e2204ab81f4ad819f7c645169354f729fd5c. 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/GBLV62419875.
Ibiza 2017 (Compiled by Chus & Ceballos)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f3521bdda60bf281046afa1424e9df76c71243445dd902e23f6c7692438ee8. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/ES7841721216.
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