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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3c7b01261fe6751b2b1accb60f3d6fbabcf3d0ef8ecbf122b083ae8b1f1e49. 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/666a5292-bed5-4fd6-a904-3e9d3fde8838.json and https://artists.proofprofile.net/proofs/artist/666a5292-bed5-4fd6-a904-3e9d3fde8838.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0278264569d45a140ae0e8c8ddd784f3390be21244e3ddd36f2ee5323c9342dd. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/GBURD1000021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb857cb1ba19d8489e3760ee58f13c65f41b661bc3321d74e3f143459c4b9df80. 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/GBURD1000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0867bf2cd6819fc6d6fdd4e3a56146b5509a52204028418d707fd809a1b185. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBURD0800046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6b1113901584e0d9b1c2371f99407fd3edc6c83318041883b2014c165601b1. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GBURD0900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a1a521d69f503563cbbcc2557484a0f4be60232ae3b5be0706fd11d23f4dec. 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/GBURD0900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b4b757c04c8b3622bd3ee5d53f0911d87288cf643d9c1a85ba5bad61e9ff7eb. 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/GBURD0900005.
Out of the Oasis EP 2009 - James Asher & Arthur Hull
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa270763f211175176d819749ca402da8b3dad81141bddab21f19a694954aae9e. 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/GBURD1100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435b2f0700a6129081236a74249d9f86e997983f6719c192d3b6bd79d5b1443a. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/GBURD1100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475b6ea10bda70dc5a570f7bcd5601aa1f0be6f7d885524bef6990fc8a52cce8. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/GBURD1300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7afe416bc0d048f3909ac7fec3dfde9811223c42a0ef4d17cccb1a5c9e5f13b2. 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/GBURD1300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa582f4284f6631e2f87d47dd86f6dc9aa97bba72b11eebb8c87882fba6bf3eb4. 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/GBURD1300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e77d789ba33597af5773109875b38468f5f25b4b9909aa56f911c02dea6da7b. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GBURD1300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8e1a36acb46a6a8a20a3cf36f3e6d2905e4722a1a380b5ba17e3c7529c33a8. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/GBURD1300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c092ea01f0285bae7585b617d6aab71c1698f326a45d35d62ca0ad5538ccfeb. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/GBURD1300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f29bf2da267637b07c183f7929dc196abba215b63f2bbddad1e940fa212e1a. 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/GBURD1300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026f4e4fde9047eb17e815c8060efdf3e00e4e1842c250c4efab24fe071c7edb. 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/GBURD1300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ddc171a82102e255df2953b60b8c6d95c3f3e227510ea6fd6c9fd68b3b04e31. 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/GBURD1300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb76c537858b53dce242da2127596c24af191571dc7e6296a41b4c4a7d8aabc. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QMFME1545425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e93d749b8879be168b6dd18c48885280a05117a4fd617dd98a357eeb275fd20. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GBURD1701002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d132be94a588ec4873c89b27a83fcf3921e903f8b5982f7384ccbdcab77d708. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/GBURD1701006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e94564150ed8527a6e07fbe9b00db71dcb2be13bae304db6335544d3810303. 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/GBURD1701007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe95ce54a8fac402d87a6c198d14a42f5a53fdc016f26e1ba95304b83f4fd21b3. 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/GBURD1701010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf919e9958e8b74aedc26e6741629ab5f7fa444465f537670d795b9ee2cbd002f. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/GBAZB1939013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c80d697e21c056a63df8d21b3a46ec58bbfc4cf7ca18155b72cf785aa90850. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/GBURD2020050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa587833c4b530bd7684a41f612d85c460d96e45849003774bf2b398fb960744d. 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/GBURD2020027.
Rhythmical Alchemy - Best of James Asher & Arthur Hull
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cfa7b69663cd4a19356e6ebd182b9a39781216cd5a9aad3ab3ce84ffa8398a8. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/GBURD2024008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a816ace4e187b8b4ad2d3f638169db2ff40273a00073c68c95c61c880d3578. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GBURD2024009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d3d3ada9615ef4e502736cd8bb70b3218b07b30348c262713a50ee71d5ea2b3. 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/GBURD2024014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5de44489da064367df1e0fae1d19c08a5886fde7b4411c646cb7c9554ac661. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/GBURD2024045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b4615ae33683604eb695025925219abafb2c00f2cbcd95bf9a472068e298d26. 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/GBURD2025002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b91649fc5c5e55d18d3930a1522f9e3caadc429358f44503f207fe9fd78886. 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/GBURD2025005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79e111b2fe273b10fcf46f5d81e72c80d4e1d48654f1613cb30da39de700482. 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/GBURD0202512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4432edc17b27a62dd5074506202d32d10ff36eb1cf9572629e110a1aae2a3497. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/GBAZB1151324.