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 0x19abcd789eaa76d8c914a8bd4564240ec88ffd1ae69fc9fe2107050ca010f288. 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/ee2b4ee6-972a-489d-9f36-e1d64a21026d.json and https://artists.proofprofile.net/proofs/artist/ee2b4ee6-972a-489d-9f36-e1d64a21026d.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 0x5f6a845e22e42c4ebef3da9f5d70097b664a2582b1572a559b022f03c0ebd9b0. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/US3DF2277059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ed77f4482d405b57cbb619dec5fd621c5e06f8fc7736f6a3df735babb27888. 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/US3DF2277052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf9da1bb8e7d251324859bb5038ddb13f80f2e431a13a7e3d4b2252123a96ed2. 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/US3DF2277061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981b952cedb0eaf9fb31f5c8107b4f07600f0ec159c0149894da1c1e5757588e. 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/US3DF2287786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f6b9fdea0a35603a227f7f6e27489ce0f57719ff6e2cc2a6dba4ab1c4e8ca8. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/US3DF2287813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe59c42d8b1f015dcf11b82b0fcc82d8a1eb5df321c29ac476239b95682e115bb. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T03:51:31Z), 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/US3DF2287814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511272f25bc2e6ca517695fcb3e81a171166c406687eade65ef648547eab48cd. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/US3DF2287815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02920d600e8cde678ec74d49016b6fe8998e5744ca0d67951948e8fa3d83362. 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/US3DF2287816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0118b1fd253a3ecd1906a02a47d999742aed9230f42efb6ea770616576ce4b. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:04:09Z), 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/US3DF2287817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0953585c583dbb4713b771c722cdb75d651afb5448f76feccbeb994935e0c03f. 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/US3DF2287818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12523b56f1873e684574462b65edda8d9e2b343bf982c1fea50fda3e9f85229b. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/US3DF2287819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c145b1fd8f9b6ee02c2d937ad091d6a034a74ee5528835a02184171ae84878. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/US3DF2287820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b78a11982c930570f0ff21d7c7814fa8d9e2abe096cbfecb1e1ec94a56827e. 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/US3DF2287821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952b1cfb9dab34ae82581b8c37b65e66202ec5c183f551624f53a9ca647608fa. 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/US3DF2287824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd58abb4763c57cbb0437038cd617218a674768a45720e6468236d3cec0ca6105. 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/US3DF2287825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c79c93aa3cd1b7abbe05ac5dfb9eca1bc143135adf2c1a484092ff0ecc01c7. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/US3DF2287826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b70a5fbfc3312883763c79b8042b7c31863b89edb5c05b51c461c187523807. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:11:02Z), 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/US3DF2287827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1e206b4700005cfb73065f5db83f103d4fefb2b20831a2d64aeacca4c0335c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:07:24Z), 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/US3DF2287828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90393c65b33853e05907b5180a53d730d98598ccb1bc3db65050dbad2bf2688. 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/US3DF2287831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa884ac21c90cab6ee70f6b8eb0efe25fb30813825100e8dec40b52d37f641c8. 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/QZDQH1828443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a699ec782996f5a8afb10d6698c378e264daf7dd19f83de5c14623ac573be56. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/QZDQH1828445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3142e553d051f929ff02b77be0929b3075ad393b095f116f7ae8514c4f33d872. 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/US3DF2287849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd8e6180eca1c818359b76598318b0b8d2865dc0a7c4d9c98ff6b91d325fe342. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/US3DF2287854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc69bdfb358379ecd94cfead5185f0d18618ef619e957576b9309d6b9e1d71a. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:12:18Z), 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/US3DF2287856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77347261b1fa3f0be2d8289aa5d9a0d33e163ac4b8b11cfa711485e54d6c03c. 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/US3DF2287859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb455a468e167369ae5b84d6c3cd6e0251b03386b863f9970905165b8580e5cad. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USA2P2350972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7633668a2b9ad09df8f1d65f55528e8318bffd32de376cf0644fd3d82ba58b8. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZHN92586126.