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 0x45171f380a88abfcaa478473d86d9926f190af22ad8ad3d2207c87b04a5a418a. 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/20887011-99b3-4a1a-b3cf-3de88c28a2f0.json and https://artists.proofprofile.net/proofs/artist/20887011-99b3-4a1a-b3cf-3de88c28a2f0.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 0x37347095a3f0737313971dbd7924b2130429ec862025925a77902fca1cc08e45. 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/FR9DZ1801520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b25c7380161b468e4057bdd6b52ab2484a3a5295198fe6d10bc6f9c99bb0551. 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/FR0Z50046205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa923d6ceb76e9b7db0ef11e6102242fd786537bd459acefd4cf24c95d80c4919. 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/FR0Z50045862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072933014a3575530d2804484d6f7254f27f53561d204508604fe60f95ebfdf4. 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/FR0Z50045402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74f428412511afa6413f6f15f03ebbe7dd40f1e059ebacbb0903d90db4d555f. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/FR0Z50045400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ab5e953dca17c1558d66f97627de9fbe1288ac63a6a8f2a265cae634b0a129. 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/FR0Z50046192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b3aad25457029688f2c333dab93491b1c07c3dad6b380aaab1f9780b3ba32e. 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/FR0Z50063273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d684a7c6d1141a4cad049c777392184f3565b9cd01a9754ecfceb1995b15438. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/FR0Z50063275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc6309483d40636a3b52338395b3d94d704f1e2eaffa4ccb4ce377961d50c58. 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/FR0Z50065065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085f8d22f663c021288b9abdce0c01ffdf54721e7b329a788e1194cd367a0bb8. 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/FR0Z50065068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac8e9a0912e4bb912435753f8b97a2ad8ee888f36ce63abb55695af5b37995d6. 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/FR0Z50072361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe09b3396ea981497b77331a33654c0c25bceff3be4ff91195054aaa36c604b91. 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/FR0Z50092721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x401968ef49e87f15101cadb1252b6c6629b1ebc948517a6e7a5a88eae0cbac5a. 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/FR7PE2200360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e31740a4705bc087d89028bd05a73834c8e1f7ee6ac072f0ec5a4e79992651. 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/FR7PE2200210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0088e90cc2ebd7a89e3d7c075c0700e24a3d01465fef265849898d56705aa9. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/FR7PE2200230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b21920bd1bf3014e205ff58105f07a27674410761eddafe1405221832824374. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR7PE2200250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58423318d4d67736cc2626fedb9a990969101c38464fd08d8ed65910ba80b75. 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/FR0Z50110102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd150a88eb8c81735ece8e182101b72cef79f5b3f939161f36f3f891a7cc3fddf. 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/FR0Z50125189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca91fac6bfafa030a842b3e59433d13596d7821e36915e26f4db9b674fc4038. 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/TCAIS2419857.