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 0x3aa2ae0b0ba2c75f0e3bd71bd10c40c81b3151ab646dbcc25f3b3cae6685b40f. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4636cb0c-ef06-4e0b-bb7c-e8caade33bd7.json and https://artists.proofprofile.net/proofs/artist/4636cb0c-ef06-4e0b-bb7c-e8caade33bd7.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 0x824febfb41e5724dfc1df7fe6e5a6f61f0aba1f65ba8f3ad524d889b8b7b8204. 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/JPC102000250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20fb34c8057ddb9a2fe865ba9e05d2f960e2a3874fbddc88aecec6c2744ab4cb. 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/JPG102200493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6046cdd0a926411d3c017a67b371d1c7d2295c32ed309b912597a90b52510d7. 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/JPG102200494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad0477b12f2f0216b6e8f9430450581b0fd03d55b0ec65c31cb5753795f3a27. 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/JPG102200497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45656f24ed0285464108e4ce2fa97569acd5511fc05c10dff18c36013146c7d6. 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/JPG102200414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65c0be90b9de480cdea11b65157e1ef8ecb9f16c2207c533c647d22ffec5cf4. 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/JPG102200499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e48ba23caf6634d96ed31ea310681894be90cac93fc51969d19cae951dc7f4. 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/JPG102200217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf615824de3c51e3de40bee8232882ffa2f4afd1009f26a2622e6b4e7db47bd24. 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/JPJ902403670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45656f24ed0285464108e4ce2fa97569acd5511fc05c10dff18c36013146c7d6. 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/JPG102200414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e48ba23caf6634d96ed31ea310681894be90cac93fc51969d19cae951dc7f4. 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/JPG102200217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a8cc2208aef8fcd63ecd6383a24942ac4fb2523bb4bf37c54858b0d05fdc431. 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/JPG102000278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f9cf1a7eccfd04f94d13d35e7a5476d2ec461d0593c319fe04855d20f4a47c. 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/JPG102000279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d2cd4fb36aab2463c34116c522d0ed9e8ff9a002f2ed733bbb637dfc298657. 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/TCJPI1994144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6cace235cacc791da9644da1baad069974a6ac00395487584f1b4494dd44096. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/JPV341900043.
モナレコ・コンピ -大胆なキミじゃなきゃ-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd1bd8d40f89ddbf8e543f20d7fbeb72f75efda2f63e8a3a33d1b917c21f1a4. 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/JPS801851049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390c67f469b3c1c155829fdc72dd52684171e2ebe7aa62e8841e1624511a5f22. 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/JPS801851052.