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 0x13ed6f196def3c9b1acc59066724cf8190b1465b95b0b96e1e4761ee4dc17484. 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/3b27112a-2446-47ea-b826-b9d0acfe5946.json and https://artists.proofprofile.net/proofs/artist/3b27112a-2446-47ea-b826-b9d0acfe5946.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
In Retrospect (Selected Works from 2007-2014)
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 0x5f79dfb11a11ae5412390b691647ba793f6a6bb2437fea3de46c8edc8c2361dc. 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/FRX871585930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ca5d66613088ec2e1823d557392da09eebbd232cf7edb4de95b69bbc59feb9. 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/FRX871585931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd56aab462dba21cf23a06459c892fbc5b9bb195d5ce220f8ac2312c811e8c1. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/FRX871585932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8383779fac3f94cad1c77f2217b7b6329d293a791f9c027c6544f20a74891fe7. 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/FRX871585933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4991a920ca70b43dc8fc8e512e8959488ca4173949e686242a9c38655556328d. 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/FRX871585934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa003dfb0633fa9f62cfcd270ab2c2aa6730cb2f4bf1bb1373d17c7651ed43314. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/FR96X1685728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd358f9688221c7c57c370b7e22a8f76fce7434368e48815036eaf15279614622. 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/FR96X1685729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf341d5e96a58f4eae85e51c974fa805647557f2308f2c1af4e589ff8c6db9f9. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR96X1685730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf974ae0cd3f723392cc6d7b2d74860b128402aafec8da7238340a706dd8a951a. 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/FR96X1685734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ddfbfa27dd825928a374cf47f649c27b03a6dd4c3debc522fc11c7720a1adf. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FR96X1812846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f53488528ec931ec96ba4846e60b9694f44dfe54847428f5b7ab68c5ac7c2e. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/FR96X1812848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab5be2116103bc951ccd2b8cb5b44c4b457b82a5cecbc17e8adffe11edae1bd. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/FR96X1816428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa179671e1a97d94f9ed83298d27f9edc1cf42a11b116a73e5dd5b6fa2d04c643. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/FR96X1816429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f318518327d4a4fcc51c643388e2c98f642741a2fc98eae7200ba1e5cfeedd. 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/FR96X1816430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf738ee69471f8f7ce3e2d08987971a353e9951332cd6fad53454c2c14a98d12f. 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/FR96X1816431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db5cd9a4000afd53394d5daa3e77eff6ac845ea466c423e0233cfc9116a9c83. 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/FR96X1816432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c82489f904cd263f07b43f570bf8ae33a24f0f2b948641710ba049b5c2d4d08. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/FRX282015538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b10e11901b7c8d72f7a54d40baf42a23721c01381ad185d4963db77b2434a8. 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/FRX282015539.
Diving Deep (Inspired by ‘The Outlaw Ocean’ a book by Ian Urbina)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d61f6e10d3ae3f55d23e09ced447abb9a8fa4abdad8be80964b2317b3af5e0f. 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/DGA0Q2366078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2181a04f6fbc844b9c67272560e4c7e0e4b9fc51463770f0187061916596891. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T05:21:06Z), 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/DGA0Q2366081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e8d239b83272415e156ba628bda818d233c0058d7d5b8d269cda2f08c9fd9d. 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/US8DZ1301039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029d56b0e03df404c933c469bace177b90fd91ddcf4c3b384a0479192deb86dd. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZADU1708702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe666c5fa7ac1a33cade9f703d5868c597807c6c4dcd8b66824e8af79344d1ca9. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/USA2P1518864.