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 0xe62cdaa2aeec12f2bc395dca9050c7504eb72e200f6696587b71c5a98880d021. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e0c9fb2e-5edc-469a-b607-44f442be34f9.json and https://artists.proofprofile.net/proofs/artist/e0c9fb2e-5edc-469a-b607-44f442be34f9.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 0x275d7eecad63383e1c0c6fbbe010b7b2b35ad22f95905378197db562b6042226. 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/QZDA81971081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a21e5fbe36229f0269f81927577ff28888ebc14155f54a01186797bd635b75d. 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/QZES71987004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1cc982bc0ae41dfffb9a6941601ed4c5cd9c497781474619a74afed52273e2. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZFZ72002009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca63caa019978e0549b6b8d49126eb0d97a7d2e2782fe811bf533f8ca5723944. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZHN91949716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf930ba30000b3e4d7a8f89607f6318bc6976ec30845421aefe8cd74ee075657b. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/QZHN91939599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x915473da0d685d5bded703ce2e8cdf0f12342ac00f6764e81657e0933c234384. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/QZHN91939407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbcd0e39d594525d53fa2014f0eb67945edc845e4366d20fcbe57a2ea098fd89. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/QZFZ72002011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3cd7e3633534bec34928b93fb9a1dd6a6ad134e821e5be4dd018469bee515c. 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/QZDA52052349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf97abfd5a3e8b1f8558b4b5e1cabfc9e6056de41cd0c9b94d98346da065161e4. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZDA52052350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe09e7b8acde1d249fbe99275afb4365c586936ff6b734a81fc0e3880984db71. 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/QZDA52052351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f97051a81e2e643259601a07964a2ab268d33492b066e835b10b404f9836bc. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:33:32Z), 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/QZDA52052352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175f6099cd17c306fe20b6cee7e3e720d85a0aa9a0c65ec3ed89d0c77bc556d5. 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/US7VG2116819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea139154f4b515511e417469c83b367f648b4bb086ec42c081215cde20057b8. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZK6N2004543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15292bacd2559af408b6d3dc0ee562a115877efef659d649bd0bf19eb99394af. 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/US7VG2116820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e4cd2d81992f5abd021f9780afb074c676aed729ddc420556dd2cf2cd6055f. 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/US7VG2116821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e50260ee24328a39c8337b49f2bfa4fbb9424c8a6fb84d6998a779310acd7f. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/US7VG2116822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ed108f10408f77d1ea947fb4723f411e93caa0849ddb4ce47399a900688327. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:09:22Z), 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/US7VG2116823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b1fd64221ec4acf8970ca6e2a00a9b415ba600985a2bd92ee8197e2bf5c40d. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZES62058853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461c8fc364fe6c691ef69d0318dc9eeece8b7d90d9b426fc160f0ca99a9cc5a4. 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/US7VG2116826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288801c34d7975c47ea5bb61ab0c6148de70db75ad3bda7656fce7a6dd2b9b99. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZTL92124916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d47af118bb077f06873a56fea76b481f0e83adf6fedacb8e4a012cc0af44f8c. 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/QZTL92177138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c87ff7a632eeceefa293f4f8971902c9513e15cb5c1b270e123fe4c0fa15fb9. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZTLA2316121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e7e7ae7981bbc76962b4d34af4d5f5003a63ce1eab987717f68a3cb03a110b. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZTLA2304223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802e0299d31b80790e4e85cd2e1928d079b646cd54b295c025540104eb83db10. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZTLA2316666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c87ff7a632eeceefa293f4f8971902c9513e15cb5c1b270e123fe4c0fa15fb9. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:44:26Z), 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/QZTLA2316121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e7b987ae67fb88ba3317c91659f27bee6e420554f0dd72c9b5503a1fd72b1ba. 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/QZTLA2384881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3229823b9f8124fa7e802fcb7850e8bdfd5157ac377ff0b82efbe3add1f139e. 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/QZQAY2288271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x849dc3b3e0f09f11345f98d73ccc70ddb34feccfe4dd70c0562476e7ae979052. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZS7J2317599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d62821458bb31334d6bb06d4ed359952c91b439d3a4ccec2114aa1743f6668. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:09:22Z), 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/TCAIJ2402486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e5a4d15b0acf4fdc7891a7d0fe0149204615c31ffa7ee40d161bb50b3d4cd4. 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/QZMEP2257044.