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 0x67fab2f80058d96be95d0cf36f94577aa8f74b9642f4ef27e8f2ef26acef4970. 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/f6f46a1b-096e-4b60-87ea-3f14de361482.json and https://artists.proofprofile.net/proofs/artist/f6f46a1b-096e-4b60-87ea-3f14de361482.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 0x3c39a43b0e62df1e999ffb9af31fa637171cd3e98c550e9c02492477ef41e8d8. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/QZMHP2084060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265196c54becc23ffac44310bfdcd061ff0dba96e443c0d6a2fa3d467cafb9c5. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/GBKQU2140549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e524cc00cf5eb3f07f14a85eeb1c61104ad861f063348a3e4dc5144b40431f9. 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/QZMHL2057588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49314e7afeef2f9a00212be2a5cfd106f3ad9b65a4dfc3f90dc8ff224bd4e67a. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/QZS632191888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5088f50751bdd108dd6b6fa87e4e0139b25937136ac01fbdf550a99828df314. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZS662114254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7efdf4411e320dfbdad60b0b34d1d69a974b5aa0cc031fbf7c447eb1b4832297. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM42K2221596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b78d90fc792ed76ce88ab103cf7472b91c827968d3638d1cae1026209e58d7. 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/QZS632160083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143bb0ff2c55dbec6b4ef01d92b6722b58e2722174b2ed8c502450c2eddc733e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZES62290560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7efdf4411e320dfbdad60b0b34d1d69a974b5aa0cc031fbf7c447eb1b4832297. 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/QM42K2221596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178bc0ddd5bd599023c0a28107e588c271c5b1235147fd36adb7a989d4818dd4. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZNWX2049168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf09023ef151a836f78491655cf240a04be478bee34c59f2e12a8850d62b5e1. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZMHL2073132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2077f799afddbb73cb6515d75174e0d00d7d14873dfcdc138f7bd5928081d115. 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/FRX762235920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389cc867057d932bf8fb4519d64717aa39c0015d355e84865ac5c6fd141da7a9. 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/FRX872248007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72852b9d65d640457fbbc35e9fa3769fb495b7f203d3696cb8c4e0656f7b9338. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/DGA062295126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1cc82481bb08126e011ba1e251b96991953e6d8c1c8686a98ef81f6a959207. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/DGA092209165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2329cf99a7fe61ecc054b7bed85c8ac162be09cec03b464f62203d130ace69a3. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/FR59R2319509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d89b7b29a1c530e9fc05104b95ffc9a6f8db60de412a988a4e2894cd3ce122. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/FR96X2328622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc743fb141b54a963393f7b4133deff05561a0d662b3e3f18524952fdc1d6c2. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/FRX202374545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x852ecda30cc6a828e3b23d3dc3fb82c1507157ff272176b13e8cdb1f09af4202. 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/FRX762335068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce2ecdb21461f0aac243203bdfe5d1c5e19d1a345aceebd0a773bf2e2bef76f. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/FRX762396091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5f58fd6028dd4e2ccf70499c99066514330f3beedac40e70f23cd80d9ff783. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:12:23Z), 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/DGA072387557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5164302ecbbcb9655e3a1b27c726b29116543f5890cd5303e7f93dc6b2a668. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/DGA082395357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb73afb1c6dd17b1f2250e403d308acb30932b37546400107031c12de9bee3d66. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/DGA0M2398596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6a950f17c369ed258699401887fcad2a8deee2746522a03ab1116bef7e9a94. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/DGA062451043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62014b3f0ae94e3925e1d262f7318980ad48110521e4c3b88a3cce24bc841cbb. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/DGA0T2441415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd2c66f7e0374a5ff68b5d60971518c2176bed1f1b9e55864eaeb4547d80231. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/FR96X2594386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f751373b5176e1625843b34b770c36bae0a795cf31ca86591ab40d707b07fe. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/FR96X2594387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a20899b2b43935cf0ec3c486024b4c1538dc68edbdf6085a6196fe1a34da37. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:03:40Z), 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/FR96X2594388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e2ed848c224cf4e512c61d09c14d08e9b1370c38d8c00342a7659e161f409f. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/FR96X2594389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f2f6eb45e5c8527a821f37357710d62ef645f18d255f595e073edd568d43f8b. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T09:03:27Z), 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/FR96X2594391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc343b189d804e3546c7d63271f6315b28d9082635b4cfc97fbbefc68e550de00. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QMBZ92543399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b42925e322543f99b324da2f1aa01886dbf1eefdd175faf4741ed4a87149a00. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:41:32Z), 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/QMDA62581658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24cf9ebd2e63dc597bae74b0c57f8075b091357ed8ca191b18f6511d1185752f. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:22:06Z), 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/QMFME2527563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1232c5c185581792d4eefaad9858159538abb6756d4e7c6d0498c0228a3fc5. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:03:56Z), 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/QMFMF2504278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1398dc0c46a731f2d0bcb83e53c32129dd1eed46a903ac459bbeac95a7609a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCAFQ2129670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35bd1dc8caeb9bf3a07929070c377582ccc7f66f7efbe5fea394ac954d0f5d49. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/TCAFL2139144.