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 0xb4a26a2b75a3a641e71b74b14f39d4054a3a537e8094ae21234f77be63c6dbfc. 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/80d668ab-4e2c-467f-99e7-500dfde9aa89.json and https://artists.proofprofile.net/proofs/artist/80d668ab-4e2c-467f-99e7-500dfde9aa89.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 0xc34f7bdcdd8ea01a1b61e2bb0b444d78fde819dcff948e1900266fcce22571e4. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QMDA62138854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c9e4ddf05a52710b553800964cbe02ddb96f11ad2845f9961ab1a6a2256b3b3. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QMDA62139401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbac14887211d0e923a09624890faed3b6fd64356649d53027b660097d5ef23e. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:54:08Z), 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/QM4TX2259463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e875fbdd5cc8f0dd861685146e7ba8cff8451210b5a497c7ad1a64536be2f14. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:10:57Z), 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/QM4TX2259464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdeaa1b7f9ab9d7b57a9af594ac7637639f2e38e0757b9212f42587c747f9a1b. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QM4TX2259465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34299b9d6b1c164ccf37c64bbe6cbdbe479bfc771d702b021808c387d889c456. 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/QM4TX2259466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16573295bedfc27b31c82c2d876d5b83d56d406814e6fc3f5f38303528d0b1b. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QM4TX2259467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b3cb889a852dc62b68045f16e46959e09291cf0ba1a536b30faa9ab9427150. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QM4TX2259469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621ed7265c4a9da4c84aef15eeb0a3a9bbb10e31297913a13cce6fb90401fb74. 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/QM4TX2259470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c025b3e25f735b3e096b1dfa17aa6eacc5c05f9a033f7b91ccf0417a28471a. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QM4TX2250912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01ce8f1ca0fedd9adc4cd425f3a4933e6d3111a86977f3f9e8beff12bbf7ad7. 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/QM4TX2250913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe737d29c3b4c53c1efe8439060086cd1d748b75e0fe3b01af650fbebb9860db9. 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/QM4TX2250920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778ea76cacc3f321ed31583735ab8273a7be771455f0378f2f0dfd51fda98d09. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QM4TX2250921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aff1caa15c3f98ea5f325faf3b112da4f8f7fdf80e3be052609aec20a013b66. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:35:28Z), 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/QMDA72137175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d7b40c3494b6fcc2d4ca9cd31ea945bbd1a85a255d4c715aa6a3fde54c5585. 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/QM6N22289277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d04ab715f47bab755318cd429b463a5e3f49c673d24bdf46f49247807826142. 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/QM6N22289278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911f349a958d6f355618eff6e49956346db6d5f8856a408dbf60d5e855757fb9. 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/QMFMF2132648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa013d308c6c4ba238b264a394a3409f1f76ceaec741f0960f678bb4ba4886de2. 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/QM4TX2247692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183b3cfecdba83beda964fbfe94709ffae80923393bebfcd9ad5515bb4179972. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QM4TX2442440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f99d5915af2ef0eb5ffc2fe5646d554f51a8c5cc86c61a31641fb18b00b9cb2. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:37:21Z), 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/QM7282421723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b71239673a480fb2a31a19e9aa53a1462465063ec078f9de0ee0891e924c4bc. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QM7282421724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b0ce30d8bd89c8deab61c1b845ba3417d0610c291205f33eae9ee2005f754f. 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/QM7282421725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a230f2cb1b6abd71a8af14d7943129335d70dc3492ef7f2c0d42413b297a9b. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QM7282461118.