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 0xc5371267dfbd2dbecddd158625858e74510a6bdf5e5bd781fbea1b221382c98e. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1035ac10-b4cf-4fa5-9264-6e270db78472.json and https://artists.proofprofile.net/proofs/artist/1035ac10-b4cf-4fa5-9264-6e270db78472.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 0x286e879870a5131fdd2d966e87cbd00acbc2f7d521ca9bec2d2601699ccc3dca. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZDA81810873.
Credens Justitiam (From "Puella Magi Madoka Magica")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129fc9c0a391f32ff02d09485a0611e6339bfbfcdc4b881fc47c59af66ab54f9. 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/QZGWW1929713.
Sayonara (From "Adieu Galaxy Express 999")
Isabella's Lullaby (From "The Promised Neverland")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81c5f4446f8606afa634d52042513b4443960a93b8a5f934b60deb32dfa487d. 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/QZGWX2061179.
Break (From "Yashahime: Princess Half-Demon")
Homura (From "Demon Slayer: Kimetsu no Yaiba")
Anima (From "Sword Art Online: Alicization")
The Edge of Dawn (from "Fire Emblem: Three Houses")
The Sea and a Pearl (From "Fena: Pirate Princess")
Red Swan (From "Attack on Titan") [English Version]
Akeboshi (From "Demon Slayer: Kimetsu no Yaiba") [English Cover]
Jasmine (from "Tsubasa: Reservoir Chronicle") [English Cover]
Sis Puella Magica (From "Puella Magi Madoka Magica") [Kyubey's Version]
The Promise of the World (From "Howl's Moving Castle") [English Version]
Lend Me Your Voice (From "Belle") [English Cover]
Inside a Dream (From "Deemo: Memorial Keys") [Cover]
Where The Wind Blows (From "One Piece Film: Red") [English Cover]
Moon Halo (from "Honkai Impact 3rd") [Cover]
La Vaguelette (from "Genshin Impact") [Cover]