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 0xe01e37889548ea466557636f354379889147a3b20f9cbcc78061fcdeb31880a3. 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/434fdf2d-50bd-4767-923e-2a5d7f476565.json and https://artists.proofprofile.net/proofs/artist/434fdf2d-50bd-4767-923e-2a5d7f476565.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 0x6f097340bc8cface6c6b4797ac16bce8d71341603d02a1f6c0bdc41fee81dc57. 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/PLA552300919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79be4940e750d093100330bfec1442e599c0877b016ddb7b19465ff59c848ae2. 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/PLC062119565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae22f1f9cadeaa37b30f1d8dcf3fc12abc33ec81112a5a6c369c6eb367c986ba. 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/PLC062119563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffee24d817eac1302a4da335a1c91b70c88745ade8588ecb00fe1b3e51aaf246. 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/PLC062119561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e5bc749eca3b326476a592943ef32f254efac1ed3be1da0f631b2a753f22774. 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/PLC062222272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bbc18772e9511cb4db9b6c3a823bcb7283c1b8e9c33c9648d41e8088be57728. 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/PLC062226402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1fd745e4770eef4aa70ec0cbb56ac00d1f164bc332847f795e2c75449b01271. 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/PLC062226403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358db47c2379acc4f3c7a53962d7280c841e740408110c41cd451d9a79739179. 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/PLC062226404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046c8b23d4f117fa5c61cb513025c53a82f1a8b444377bfbc208feb70c768cc2. 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/PLC062226405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df2a3418b74928dd8d8cbed02671317b3733c7647e0344e589ad34f45a8d186. 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/PLC062226406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828a1919ec0df2547e99baeea0eb82aab020b181dbf74f1fd9315a3d797e7d21. 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/QZK6K2189554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef00aa7b75eb9ba0445f42a7dc8b96e91a7b6f8f27d71c7de84c7f95b0765b5a. 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/QZK6K2189555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4584dcf0a9e90665b6b1c36aa4d04f9d1d5a81fb946689279e1df883f4303dee. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZK6K2189556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb77033a2dd0b4191ed56fb33ca4fda30e929afdd7116e03c717433eaaf4feba6. 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/QZK6K2189557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde179fc1eb4ff261d048c6a74130f69b226e7c1c3124c9818e22bd9392f89349. 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/QZK6K2189558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x419be87900d4cbea411a2419ed9076b19e9359aac198019984b4f9ea4d249bf5. 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/QZK6K2189559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6899f8ae5b90aaf7fe82e56af329d7451f1f423f5103a7379d936d9a2689368. 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/QZK6K2189560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c66e8140dc19f5c2013736e4fc522392d51b23ca5672e36d5e2aabadc6bbdca. 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/QZK6K2189561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92763090cc2222beb190707d8daa461c052f3c7e079bdbe686ca68c7e0e6bb0a. 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/QZK6K2189562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b8cbf14595ef41a5fdda652de6af4ef5da34c4cd31cccf4de79db93a9bb7cec. 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/QZK6K2189563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd1f191057a252cd6e23bdfa4d345adf88aeedb91eaedea75537245a1a4896c. 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/QZK6K2189564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65b9e3e5a41a0f23f6913829ab9595b0749f1fddcf9fdb5ffc3cac4f0e5cbaf. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QZK6K2189565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1685cebc9884f42c4864cde44600a1474bc7c7cc52a61c75b81c96e23002a88b. 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/QZK6K2189566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e3302ff46c82a6c981104f1abe54587625858cffbd4d18ffe2def1ac450a28. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QZK6K2189567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa24525c868c053015fb222214d95600c986b7d08c0bb1419520a74fafacdaeee. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZK6K2189568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d9d05e99112cb31f758107377d2895fd2a80f9e40ac815c7834804b148f926. 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/QZK6K2189569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6ae44a3066d82067c091cf3e6b71775ac8ec8606f33a8d625de89063fe3a8c6. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZK6N2059988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c31bbd4aed1021e203455abdc8042da6eb8eb4449ffb8db35b3a7da22de5fe5. 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/QZK6N2059991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b5ece5c3273f4099cbbf0c796b116332b529e79957f1dddf34b1f6d0a9a220. 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/QZK6N2059993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa03dae4d6556fe187462f4ed152eae32ab6b4de653ff51c2484c492c6a877508. 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/QZK6N2059996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0778c4612279c509abd8f843b12726e6d2fe81a69be9e96616bf91a0b088fc. 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/QZK6N2059998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e4919d8f98ee26a646aa37a51040166917b22aa6dbd0c815714242c2950a9e. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/QZK6N2059999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f097340bc8cface6c6b4797ac16bce8d71341603d02a1f6c0bdc41fee81dc57. 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/PLA552300919.