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 0x4fddfb0991549c00e7c23b5ea4520b054b317e3a16c26c3687130f83baa9498d. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a85c924a-790a-420f-9f4d-a9e99233dc16.json and https://artists.proofprofile.net/proofs/artist/a85c924a-790a-420f-9f4d-a9e99233dc16.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Isabella's Lullaby (from The Promised Neverland)
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 0xbeaa92bd9829564292d6e59e84df3df53927761e7ebc014c225d11a0e8d99fde. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZGWX2115335.
Bloody Stream (JoJo's Bizarre Adventure) [Instrumental Version]
Castlevania Medley: Vampire Killer / Bloody Tears / Beginning / Simon Belmont's Theme / Divine Bloodlines / Dracula's Castle
In The Flood (From Horizon Forbidden West)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a254108fd31745306d9cfdb0adf90d4f6342c0b6e162c0cf24f619f2b1c8a60. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:51:47Z), 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/QZPJ32178686.
Dan Dan Kokoro Hikareteku (from "Dragon Ball GT")
Smile Bomb - Hohoemi no Bakudan (From Yu Yu Hakusho)
Heavens Divide - Metal Gear Solid Peace Walker
Forever Friends - Street Fighter II Victory
Battle On The Big Bridge - Rebirth (Final Fantasy VII Rebirth)