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 0x38668483c990ea627c5acb4b5c0cd17f3d81c2d0bc066bbcc340f01e997bbd11. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8a6e4e79-3f53-46d0-a1b6-44449334207d.json and https://artists.proofprofile.net/proofs/artist/8a6e4e79-3f53-46d0-a1b6-44449334207d.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 0x7b420e014eab346dbcf181f66979ac400f2af3d901330c45d1555e7fd4045dff. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/COC010425896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86bf9e13dac7b977723c7fed5e59da508983d516246d43995eae7fea47def473. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/COC010526189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e2ce72f3d37b41091debe4aefbad14a1c54717ef821d024af092a82c6d734e. 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/COC010727289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbca1fe376c363baab7b1df421b88bad060685d8bed84534d332ce3d81b8ec1e. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/COC010727294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b05e8b81d2ab0d57e0dcd2f18278606ec1c89ffd3f0bcaa78929892d712ba4. 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/COF010901254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e58b787be4546fd4a2142733d39fdeb375793a01d95076fa0e8cc602e480c3. 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/USCGH1727766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f05d8a94bb4de4853c00c02a4f009f21259b8eee497d58dc173af8ba2aa0b2. 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/USX9P1447443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3599ba089ab2045e615f79366f16fc1ce990b6a12f165ba424bd0fcd3c5cb35. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/ES71G1864173.
Los Recuerdos de Mi Niñez (Version Acustica)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e73f64a7c0104847eb905cb55a67ca7f5ef2d85aebc816be952c4eb7519ed4d. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/ES71G2125224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66198604e508d64ac7bc8b597bccdd48e704f7bb74d0842335aea0bef6d95dfa. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:46:51Z), 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/ES71G2125229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb2403fe3264af603baf31c9c009d816ff575c1989e344a769d89ea8347e9d4. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:05:32Z), 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/ES71G2125222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a928cf8f04feff4fad285298e3579fffdf7c6148e348127958ca59e74c62a3. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/ES71G2125226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34bca17bc7ad0a4bc1db6527a8627a2af4a87100b36b7bf5e9b44d63060a499f. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:23:48Z), 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/ES71G2248273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x948654856553007fe109d131d9ce1310f201ecd61741ddb0740831ca72328c4c. 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/ES71G2317034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7ae6fc0156d479aaab81dfb95f87a0e4bce400af5a617030d7905be061f80f. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/ES71G2402760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9326e231178061f932887667e10e08857298aae43166f950c1f271045700f62. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ES71G2429169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b06b4f7be17340f4938e445e57fc8d2b92c7e6f60c588c7629a73bcc5a13ab9. 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/ES71G2429565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a1863e1812d4533f655aadac87bf38de22fb64036cc0cbd56e185caa250eae. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/DGA062542889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba3e75ddbd9741603f637c0ba316380a968575996cc6e11b25faa03c05e7b95. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZMZ92097673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e20b517193022884d0b70f3f7784e7200e01145c272ac48b7c45b66897349b3. 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/QZGLS2087400.