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 0x0cbe9d664b2be735e58d8c0e56ee5c5f25bda3d4aacb0f8ba405d19367e955d1. 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/357bc33f-2aca-4187-a3cd-38503bbecdad.json and https://artists.proofprofile.net/proofs/artist/357bc33f-2aca-4187-a3cd-38503bbecdad.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Black Catcher (From "Black Clover") [Remix]
Black Catcher (From "Black Clover") - Remix
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 0x684162e7fc4d851790bb8c454c1b54892b89989d0aac36682075e3dd160be7b9. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/QZGWX2146024.
Haruka Mirai (From "Black Clover") [Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd95c2393e7ab601fbd42b1813c3e03e0cafe065738a1a7ea120010d68fc9e6. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:56:33Z), 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/QZGWX2106194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9874584cdd7459892977e270f95a1c1ec28389f2563d2949aa5a9211cf5f626a. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/QZGWX2125317.
No.1 but it's Lofi (From "My Hero Academia")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a3f9bbeae1bbf798f38ca9ec43004b8d968569f5651ff8177cf7bea1e686df. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/QZGWX2171782.
The Rumbling (From "Attack on Titan") Happy Version [Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3443e9d3fdc4e03c8360d56f76966354b2c30591dfb17e1ecacb7fb9d9cf8e. 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/QZPJ32214312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa704475ae81bea34a110ffc13a4327dbd3e5cdf48778aa4423f6dd16bb13bbb7. 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/QZGWX2195281.
Long Shot (Re:ZERO -Starting Life in Another World- Season 2) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478fcac609d792e7a25f7d102cfa1433bbfff367123f0e42a881f29212bfae77. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:59:04Z), 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/QZGWX2195287.
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