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 0x379787d8250992aff88bb60aeb924041dd54603989f2149665694d8cf6068e52. 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/06664751-405c-4ef3-b7ef-488b78d3f6cc.json and https://artists.proofprofile.net/proofs/artist/06664751-405c-4ef3-b7ef-488b78d3f6cc.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 0x2a0fa71041598a8aa1e630f05c3cfe5c5bf50a0c5af41332bc90f576c999270f. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USJ3V1822500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d49f47ecb6828b37936bd955ccd22136c4a4a9c5aafb038fc2edf9b01c9887. 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/USJ3V1822502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25927337c6d4e64065f35c13436e7bd7d0a7dec6522058cb7a8b6d97d8108359. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USJ3V1869123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1824a05c7b78210961cf4866274684f70e7602a6102a36384917c69d48fdd1ca. 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/USJ3V1869124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c950badab38169d3bcdb13d01458fddbca065e549009dd8804ee044ef0170e. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZFYZ2063287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283e00781fa6bf3d44225822e9cbd533b944f96a964a0808b87ea713bb38b8aa. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZFZ42064004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c3c3eff5dcf6a747a3fd7228ec966a7a6a7c1976c29e4cd1c72ed47978a4c6b. 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/QZFZ42064005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df526370671d5064f1f02442de4540dc9533750de5d28fa9965e6b16e4f0a40. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZDA82019174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6b0bb47b0e8d69dbb881b03ad3a1375a135f76a35980cd1ee8f6fc2d32ffec. 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/QZK6P2051215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc374901129f68f7dd75db924b3b16b8bd4e0fb78b1eb66d866801a698c8dc9a0. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/CA5KR2127207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad9107a94cf45825d5f6faab58f31c495af7c8832a6b55fc0c0aca8adf86eaf. 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/LKA0S2100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf796a1d98fcea63bac8c45f55e952dce0d9098604abc841b358d5d7a08a034. 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/LKA0T2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe831775006b244b27e514b0cd7205ab6296b480ae35df405cd125fe8d6debad9. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/LKA0T2200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f0b9a6903065ae631d4dea387b28c6fd8e8ba52718209409e54741cec0d00e. 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/LKA0T2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2c57bb4cc952bc7810ea544dd44e2ffbde837a26864e6eb4433b576f61b2e5. 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/LKA0T2400066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a2937edef11a630451bbad4b49441e1fcd9b55d710e9bb7a760a8029de19a5. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/LKA0T2400166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3263d5e729acb272e8874dc1cdcc2e3a144a1f9d575235516ad72707d4519a71. 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/LKA0T2400277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce4fc74e0ad494cad5bc91d44396d1811f17c2951b791a8998ed0219b26da15. 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/QZQAY2264180.