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 0x7018ca14ec99c3b0a24aa18fe3c7c435a73a9764476cf7903c82a45f9f91e6c1. 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/09591ec9-f208-4655-a094-ce3819072038.json and https://artists.proofprofile.net/proofs/artist/09591ec9-f208-4655-a094-ce3819072038.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 0xb48e20e6f94226452026ca8bdb1a632df2ae29eb7aa554f6277218c4af041e2d. 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/QZPLR2262118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440f6dfb46b30db0ace4839e12f6e714442adadf791aea86d28a845f3a941c7f. 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/QZPLR2262120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0f431acdbac0b4ac752353a5b54e5f7ca58592282aacaf35adfc0b51a61643b. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZNWZ2248672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2e36ddee345d4e4d66648b2eedc763e424ee03d4bef42eb93b8be8577efa73. 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/QZNWZ2248673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd9d4657dcd70d46d3092e961d544cbef75373ee20c992b09f21ff3d0478a1ce. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZNWZ2248678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639dc0ba120258adaa67ef922e6e74d555a1ecce4baa9f8e3ef0406af3faa05f. 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/QZNWZ2248689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf954599c11c34ed7241920a44477be81e46c70bb8a55ed49ba322b40feabb236. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZNWZ2219548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e02e68686562c536f8f0bef63d4504cfc97aced3c19038b22b0da5288a3085b. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:59:31Z), 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/QZNWZ2219552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82de8533db25de3c13c542c7dbd7e10e169ba1b44487f3de6708e38b5d9218c4. 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/QZNWZ2219558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd909bc00c8551f6e9a3b261acdd5938996a7f16eefa894e67059a0e413d91c. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:52:12Z), 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/QZTAU2261907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x250ad562b0603e77e25ef71587bbd205647bb75b8927b8b5c12b83292fc2847a. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZTAU2261909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3607a643deaaf797dfa69756eebd29b0378e39c1c0571d2e115e850758709a8a. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:51:25Z), 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/QZTAU2261911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb604dfe801cb5db19578de2f0a394630d597b2d16730b6eda94b7e75ad906a. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZTAU2261912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62c27fd49a71a75f998fa8a1cb6a431c0e74b1c0b01f5cc4c7e46b2b2ccb4f2. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:03:56Z), 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/QZTAU2261914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462ab8e69aedc989cc447b146ccf01c238a357fcbc8fca8f3a88bd35bfc7b74a. 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/QZTAU2261918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39cfbd727b8d9b3ec5ac298080f10d6e7c4926d7aa309ca03f55470d8af6d67d. 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/QZTAU2261921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e484ed33842eb75e76e4e8196b9cc5643e7613f645670ad6e1c5b9378d1c91. 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/QZLQR2125101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa321e1ed1abefa412bcc858a2f7f6544d04a027458e78ca5598b364de9c56a66. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZLQR2110974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0383ccb4cbcdc582c478c2f62bc9352a40f6140b818583a44279b68453efcf57. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZHN42371229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29f41976c54485c2904c361b937e42313e8bc2246e32a17c3d4f9257af0f6a7. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZK6P2304526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057262e6b863eae8c4013705dbe7c4f1d23f313c6b8a1fae8caa5e815396b563. 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/QZNWT2318715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f6d0e8873ca4b3c0ce24dac76bd9d1f314a98b512510bfe48c54ce5ea5e235e. Chain 2 (Bitcoin): anchored in block 957531 (2026-07-11T06:55:18Z), 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/QZNWX2367020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa0035e9f1f001c9b924fc4193a0c5a20a16919e6be6af8e3028de2f6a7a349. 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/QMFME2371336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc0a1e17249f5a585b0f5a43d6e881fb992392c48f8a707536d2da27958b379. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/RUA1D2443073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a073d6cd36ce6e65bf356e9e59844624e3aec82a851b7900aaacc9e0e1314a. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/RUA1D2470777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50312cf1b206ada77ff7a4f779e2f712c73b739cf4fbd06768acaa7ea4cd6d6. 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/QMDA62432513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a96e9af45dfe877eb5ba73dbb7b47c640993cc55d8db0f0ea39e25dad956c2. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QM4TW2517410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160d1cb7169d255d41e663b9843ab3a6cec10b80e087077da511e2b463a1bd6f. 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/QM4TW2517442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd4414692e02c38ee2528383557df142589eb97a978e701bbcef57f4f91e4aa. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QM6MZ2547495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b38f1c74ac88a6ce706974fb1b3f16ab278cc26eabfa09817cd3286f7a7f23e. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QM6N22568515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3660bc43f1c395f98fa2c4a0baa92703d4129916206eed1783f1305194a81f. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:29:01Z), 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/QMFME2545030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33923bfb3f497a5452377a6ce0c6549ccd6b3d22e655f2bd6204c6da5abba866. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:50:07Z), 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/QMFMF2502182.