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 0x9dd1dc94dbad37bbb2aba6d4f4758ce16447c368438611b381195cedfbe7822a. 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/88a1bedf-d92c-46cd-8a8a-bb05f82736a1.json and https://artists.proofprofile.net/proofs/artist/88a1bedf-d92c-46cd-8a8a-bb05f82736a1.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 0x8f602799f0eba1b0f4d180dcecac33cb1e3654012166b10f793cc4a6b6c6a6d5. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T19:01:30Z), 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/QZFZ62505701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8dc1ddf98b6a29321b3461dc25a06cd857116ea7d64eb0fc7f56ef3f10acb46. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:51:34Z), 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/QZFZ62505702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69617bdcee64ebf88df10299ba7d9f1c7ee5ea87715a7de49bc01bc80c1d1588. 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/QZFZ62505703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf965e7c6df84260c59c62291f2649c128513307c217b662ed5c9ea7c2d5f5ca0. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:02:09Z), 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/QZFZ62505704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012e69290b1dfac0665819fe531206769f7eb8715ef089c86b7a828b17afb785. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/QZFZ62505705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e840bff86ed9e12a769c5700e026d3787ad64bae88b01c4de001df73069775. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZFZ62505706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf32800083966a62f473a417710afeb5c180b265a7ba62207501148427687597. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:21:29Z), 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/QZFZ62505708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf956a81d90bf852d78b44b5bdbe86ff71afd32b866e1eddefe0404a15ecf9d8. 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/QZFZ62505709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3dcb522c129fcb66e7c3dab847df9164ba1bcda3b097b3cb38a7467855ef2d0. 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/QZFZ62505710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa857b8a0cc21f21323bd669cfa583e7dd7fe49b4dc7b3eed1f081566ff3fd449. 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/QZFZ62505711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176ec513cd21db1744d54179b99a6a06d243c364c7711f63346c9d10f0444fbe. 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/QZFZ62505712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d7c71228b39e293576dc496ef9a92164c79aa1437073b44b3ed672ab2a563b. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZFZ62505713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad524709f4326aad4746994354346b5b4a7c7e07a9317358bc61a55cc6816c09. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QZFZ62536858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6722775142bff4baa8ab725dc3e717cc015b769b75022586c95e75ab90289a8a. 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/QZFZ62536859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f15e4d64e4b73589fc1f684e9ba036694aa31c5698154e795042ba185e3a948. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZFZ62536860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1b5bf37ec3324b91abb8be967933670bf6fe82845fc6b4067b895a8497fb96. 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/QZFZ62536861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe087b1c7832fed53069a65dccd595d66ae220d25629cb5da54a54c93380f84ff. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:25:42Z), 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/QZFZ62536862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa50f08dc829d2cd17450db771ae7168c277baa6ae49bc5f06df3bee19bce48cb. 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/QZFZ62536863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6940bd5d7d02222e1d9f96a8d9ea7692b2c15d5e5e7fe4063f6fa092b9bc12. 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/QZFZ62536864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860ccb71e8da94b1fb52e2cfd801dca4c01c2d590a171a4817412df2c24087e8. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZFZ62536865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ddcd673d043c96bde554cf9b08af59606050c5831135f1195a00cb2f9eff0c. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/QZFZ62536866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81c406c201e81885a86607072a082e451f3efb868441216366b4d987c94d534. 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/QZFZ62536867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585705625aa06169843090cbfeb8c3a4a1b78ec5648b906a69f0ea08deafc8ba. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:58:12Z), 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/QZFZ62536868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f44dcb56d478c25131bc6e63f2fb728e7ef71414c67bd342f9a4b9d42ef2c77. 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/QZFZ62536869.