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 0xe71c84806a9328bf9c6840fd45188e186bdc3410689573a79c73d407e62998dd. Chain 2 (Bitcoin): anchored in block 954623 (2026-06-20T23:40:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cbaf0e5b-7aad-43f4-9527-fb9535481834.json and https://artists.proofprofile.net/proofs/artist/cbaf0e5b-7aad-43f4-9527-fb9535481834.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Atashi ga tonari ni iru (From "Tate no Yūsha no Nariagari") [Cover]
Shock ("From Shingeki no kyojin") [Cover Version]
Enigmatic Feeling (From "Psycho Pass" - Español) [Cover]
Guru Guru Kuro-Chan ("Español Latino")[Remastered 2021]
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 0x90a5c553d7091ffdf7b22b7872b15e451e07242ee43f518fe7f84b1e959f7178. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZGWX2245948.
Selfrontier (From "Sword Art Online: Alicization Rising Steel") [Cover]
Long Shot (From "Re:Zero kara Hajimeru Isekai Seikatsu") [Cover]
Yotaka no Yume ("From Zoids Genesis") [Cover]
Nocturne (From "Shinigami Bocchan to Kuro Maid" - Español Latino) [Cover]
Stone Ocean (From "Jojo's Bizarre Adventure Part 6") [Cover]
Gegege No Kitaro (From "Gegege No Kitaro" - Latino) [Cover]
Yuke (From "Sword Art Online: Progressive Movie" - Latino) [Cover]
One Day (From "One Piece" - Latino) [Cover]
Kuyashisa Wa Tane (From "Digimon Adventure 2020" - Latino) [Cover]
Zanki (From "Chainsaw Man" - Latino) [Cover]
Yuzurenai (From "Tate no Yūsha no Nariagari S2" - Latino) [Cover]
Imagination (From "Haikyū!!" - Latino) [Cover]
Memories (From "One Piece") [Cover Español Latino]
Kaibutsu (From "Beastars 2nd season") [Cover]
Akuma No Ko (From "Shingeki No Kyojin") [Cover Español]
Chain (From "Darwin's Game") [Cover Español]
Dear Sunrise (From "One Piece") [Cover Español Latino]
Dear Sunrise Tv Size (From "One Piece") [Cover Español Latino]
Request (From "Solo Leveling") [Cover Español Latino]
Shout Baby (From "Boku no Hero Academia") [Cover Español Latino]
Ladrando a la luna (From "Bolt") [Cover español latino]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47054c7d5a62c386a02a2aa07a91f02860fecbb66dacfc69729e8db05dbdd6ff. 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/QZK6Q2113849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e1256b4177edc8c8e622a669934e9565fbb86855d15cb24ed4a6ff1477e67d5. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/QZNJY2114708.
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