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 0x977784b30a69f45b0f824e7554b13519fb47b73ddff897cc3031121bf3494cae. 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/9e4d7231-3404-41cb-babe-afd633948294.json and https://artists.proofprofile.net/proofs/artist/9e4d7231-3404-41cb-babe-afd633948294.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 0xfdcfa627e7666656ca6898183da630ebd291c5988a236df61bc66ece26d93089. 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/GBLFP1933176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f64dff0f7c1640e8ae783be38be89c9fed39d426b3511f129be7ce47fb407f8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CZAM82100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e9eabbede308a1dbe3cb2386f334ac91751ee815a9b91b2a7fcd7bfee7d1c7. 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/GBLFP2073138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8763647006237407af6450651067b77109fe0f98a185817c75901d17ed2d84. 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/CZAM82100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c71dabb486018b10a15a17c5bd7bc2465f5a02ca6b699dc1f3484e7ab8511ac. 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/CZAM82100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b935368107f8635c553e3efc097f9530b7a81c78d80bb880494ab59ed3b941. 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/CZAM82100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5567afb1c6af99a103da9a1af160c9d5c4758df439da8200e3a743b344fba867. 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/CZAM82100026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a728c72c5cf6931c9b1a23375531cac5ab9eacbba18740e84257e6ee341dd2. 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/CZAM82100027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046457c568251f705d169b3fe41bfecbdf013eba6cd325dee5981ec57d6193b1. 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/CZAM82100028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb6a5b5997b911f5321d36c3b39b3d5e330ac7c9209900364675c210cdaa64a. 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/CZAM82100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91b6719f82ff0f4a48d4d809bf19977d1931b3b2ff35801673993dbd9d948ac. 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/CZAM82100030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b953451974a7507932419d7650f0f342f0eae004bbf0eb86d2d5a4a24b6e81. 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/QZZ7T2459011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce8e7f24da4dca1d50d3c712f9b577875d15b4ec594bab4877e292eba97a085. 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/QZZ792432660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d23f58ae89d45d96e14c49daca0294848e1d5cbedc1589d5fb750ec0fa3311. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CZDO42400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6302a4d773d7628b83c339a2abf538faeb2acb8d9464e9f584a827d9f7de5779. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CZDO42300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef2c7c7dda5d8b9d9006be6824d7ec0f2b5ae5a0e26a5bf608a8d1901485fcd. 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/CZDO42300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3ebbb17f873dcd819c9d1dc4b8bd0f8c24ff68e412195f2d27f26bcc74a521. 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/CZAM82300049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6830596eebf9563a073743e9a73ebc436ae663379410b05f9a3a20bd239f2a0c. 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/CZAM82300045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3ebbb17f873dcd819c9d1dc4b8bd0f8c24ff68e412195f2d27f26bcc74a521. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CZAM82300049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe906f8e8612e147effffdc3b454e54e7508d43ff2f87ac67dea28c7a50be20a9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CZAM82300048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670b9520affd6694077f2623a0793433633e61157d95591ceb5b76a0eb8dff74. 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/CZAM82300046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53d5b6255daf5ceb4169d899491b6b52aeb658a9cc4748bc93e36a9f5499267. 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/CZAM82300047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb5280bb444720c36615c92119e0516a624955a043007af691779e682c9a3e7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CZAM82300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45a773219df600e15cfce2adf22d173dbaf39dc7920fc4803c45fc561b2dc9c. 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/CZAM82300051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3c15cda468da8b2de14f1c1fd0cec962dc0a4d0d730987ee3ebeaae88966be. 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/CZAM82300052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b0262bb1d20c09e9a11c92d85726b59be1f64f1d62931cf9b5fe4f56653c72. 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/FR96X2134298.