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 0x2a2ce7837481fc2ecbf089eeb92df03cd5e9ea00a22e7b5597a6828c492db4e3. 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/b7db3b24-910b-4eda-8bb4-473e41083fed.json and https://artists.proofprofile.net/proofs/artist/b7db3b24-910b-4eda-8bb4-473e41083fed.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 0x10d4b0ddf7517519f0db86d3bb719e2c64950b32df3a2074d11d4ac707b33c59. 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/JPS802352694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b8a782d09f7a2fb42bc4e1638663403b1f5024802db42c2a17a8ff261ef2a7. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/JPS802352695.
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 0xe17e03c806806b2e14f403748f6cc137665e7a10c16eb5acbbba617045f4edbd. 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/TCJPO2195493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad3cd924ad017ccf8641fc968901fdbf6a2324e887851d3bb264a2fbc533d59f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-22T01:24:51Z), 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/TCJPB2436960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8200ca01e73b03f418facd47019d70e88d1c4f0ac4e83f01ab2a3f4c44eef66e. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/TCJPT2211486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f0728cf5284459db3c1b1669db94c33842a72e39280026496f837d969a855e9. 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/JPR502201170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa385dc79877c78585547e106c2203d7613b005803f1df57263f8458d9c2b0cee. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPR502201178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdbd35bdfd021748f147edefd9c2f6ba250cd2faa0f17a92d2a20935f1a644c7. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T16:31:11Z), 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/TCJPQ2111757.
IT'S TOUGH BEING A MAN (CHOPPED AND SCREWED)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d36a0bdb288a1be60195a66fac3cc884e8fce866145d7c5c25038326ac4ae8a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TCJPO2193006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28af29e8f885817266e9f6ee2a80d2318323bb3c63d03a5baf89a0cd5dd82b37. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/TCJPO2193012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e70e4ec685cac0ac1c40207b275cd9868ff5139dadd552ed136a23098d0f73. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/TCJPO2193025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc0820e23982901872677ee204f988171fb10999fc891bb3665ca3ca979c5b9. Chain 2 (Bitcoin): anchored in block 960155 (2026-07-29T22:13:32Z), 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/TCJPO2193027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf163cca8f6c92c3a82f52bce21a0044e11d8944058cdfcee1da3f84709b6ddd7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCJPO2113638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f15d7de164bcf839da38d7794495b73fc0d950ee7d1ff03e0adbd193d9693e7. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/TCJPM2068493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87595dd549be16ec8aa593b95c7896a234ba33b434b4b76eca1dd687f0fbccf. 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/TCJPM2068498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x861e99492694c635449167b57fd5fd2d5f4112f22a957e8123a237bd47a62fa6. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/TCJPM2068487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d70b1d693bce4f4e05b6a23f5f93bb70b2dea49e9ca66e6b35737cd6f3f603. 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/TCJPX2314629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fbd629f329cc3c7eedd7bcd4225df9a0804c64a127c5d7d81472b66f1f71634. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/JPU902203634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d42a2ce0c69893c72a9815e765f80fa7b4c9829c9b746bf0664e53f35e70d90. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCJPP2116697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701acac94e2df272bb9164226fe81d2677a37137c580a2a4fb7229d365dce1c0. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/JPU902100290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9224bac489c84eb0cd8659fcde483d25f507154bde6cd9c59e7fda9bc7e5a925. 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/TCJPN2181578.