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 0x34ca6e5bbacac365fa1cbdf0def7d9ceba1b51b966ed58a59e03faa345fe20b5. 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/e7f90781-abe7-4dcc-9e0a-439db7f40117.json and https://artists.proofprofile.net/proofs/artist/e7f90781-abe7-4dcc-9e0a-439db7f40117.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 0x5e8cc994e9743dc7ccf7575389350c2014f5d3cc6a9f1e61b0f81f6cf92f4bca. 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/JPVI02202593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ea8a5d53b7be2ef4b77aa09a35eb939c27c2a34664c99144084de29691247c. 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/JPVI02200439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd9c9e05af94f8551068639116f783987a60cf5fe77388da2fc5e1121a82549. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/JPVI02201330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c222768d529ab55cfe798d053e5a50608d812f5450e7d6b3e6a356536bca78. 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/JPVI02201093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd4270e4847c2a0dde534c4b3696e391ed529973ea056a6614ba39b9181c447. 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/JPVI02202595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159f06fc48b9ef62969ee189625ad7c048efdbf131dd1e3ee874dda571a12e22. 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/JPVI02202596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd27685bde59a655bb526d9b7ed45dbe042591ede203747c0bbf1bc4b142c2b21. 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/JPWP02202167.
Urban Tears (feat. DIAN, Ryohu, Holly Q & IO)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f927501c6fa9d36d61e9a96946d8ec858724f46cc302da7ed900deb30450c7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPWP02202174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef0e2c266674714fbae8061429573dce2bf7ef170e55bda2d89e66f0fc54853. 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/JPWP02202178.
Endroll (feat. IO, Ryohu, MASATO, DONY JOINT & BSC)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50b97fff773c30f04d3db91815e2d3b85248bb245fa16a552141f34635818e6. 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/JPWP02202182.
Blue Verse (feat. Ryohu, BSC, DONY JOINT, IO & MASATO)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb1ad07cac0ae2ad82e1dd37ca4530b6cf9dc3d99f1afcc2bbcbf30d4c5395f. 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/JPWP02202181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ad6abdb045ead31e08d8bdc11888645b06223e2e46e68038cf98b26a8713d5. 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/JPWP02202172.
M-P-C "Mentality, Physicality, Computer"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6a8ed73e22278d1344712e5b50336bce22d944be67929eb96e992f26150f92. 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/JPVI01897610.
Couch (feat. DIAN, Ryohu, MUD, Neetz & BSC)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73d134c2027e1ca7d66b00e9ab85103450ab567a081aa5c3e529e352cd7f804. 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/JPWP02202177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17492d788b6f9cb227a60073fc97c0f57b05f8dd35e200739d5c55aba2eac4f0. 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/JPWP02200080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0b41f27cea812e17eeefa778d6a43e535fd903bf04ac025299d511ab48bab6. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/JPVI01897660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f15a9ec5bb564cf70351feda68aaf925aefcc33f719cd209aaf1c29fd974e8. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/TCJPX2345396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x626ec81fd5e403084b1bb96710ba68554afbaafb7c70028f5cf79cd7cdab1031. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/TCJPI1953563.
Regency (feat. MASATO, RYOHU & KIKUMARU)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ced76107390789ad0996087edf5c62b3c8ebe99a69c35216dddb564cd060924. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/TCJPI1953565.
Kapital (feat. BSC, KIKUMARU, DONY JOINT, DIAN & RYOHU)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1bc9f9816176f6957fbbd954c3a175c289993a8a228d75c56bf596bc6d2291. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/TCJPI1953567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa2b533c3cfc6bab46abde2158713243f4db3f59d1371c1406eade78fd74a174. 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/JPVI01897790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a2a92d083f174414597f4c9e1cb1e43f9acfadc220523f622d4301c8ec2f438. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/JPVI01897700.