1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x7190d4af5098b15d55a82d71cab9cf724d9f5c2a77b7367af5428f69b7fd08a3. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/538da1df-dd78-4bb8-a8c4-fb2556d673bd.json and https://artists.proofprofile.net/proofs/artist/538da1df-dd78-4bb8-a8c4-fb2556d673bd.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 → block OTSBitcoinBlock must exist at that height 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 0x109f90c2b482676267a1659642b69e99dc5f4868b21ec9658fbfa8f6b26a109c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPTO09314170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182048a5e87f8f1b8ebb67ac717112bfcb2dc1045d4afa203541f60757835b49. 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/JPTO09314190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb608c2fd096651b3574dfd0b62ea75c70b4d1f256a719fc7dbf6f016cb8bf5c3. 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/JPTO09314240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba49fb8f0d2ea9dc72242d71786ed6ea5326753b9ed8322949a6835edda0bef. 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/JPTO09133490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7aa63da12c459b96201012e6e4eed29e083af2a99cffc956c931395bce62f9. 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/JPTO09133520.
月の夜道でマンボを踊る友人の唄
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5b42b226b6b8f815cbc1d0d3ae9b2e5f0e19d16731b2f725ba6b512e971d17. 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/JPTO09133550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d22e27dcee6355946a80679e3e157c5d9f438c56de1fddb1162b412eaf25c8f. 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/JPTO09133560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153a5c64524572d383477c20b8f639fae5e98ee93e689cdced3369ec5f5079ac. 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/JPTO09133580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12145b6028ba34a79c16c82265f10d8629528cdfb5dc1daee21f5a1d0efcb3db. 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/JPTO00502661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb885163e7c9a5891723d97ae8e2c9e4c026efc185c21ed0057320457e5572cf. 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/JPTO00502663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe482fdb2fddf24fbff2cb480f9c8caa27ab81e083051bff83a0c52d02119a667. 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/JPTO00502664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ea92add2b74525f6c8bf4e9cff8ecc375d51c59311246f9d4bbaa8bf58b637. 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/JPTO00502666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae37e42292ad97681ec9ee3b81db879d84cdbcb192d13ddd4e505245cb5c991. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPTO00502668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6fe7485603a2036b0653134e9edddb551951888308e139af20a2f84010b749. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/JPTO00502780.