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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f3025995404a9fcf0b01686c2b808bec8ce3419fa7ef78de9937245cfd5f79. 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/9117ca94-7d8d-47ad-a465-01051baf40db.json and https://artists.proofprofile.net/proofs/artist/9117ca94-7d8d-47ad-a465-01051baf40db.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Wind Waker ( Dragon Roost Island from "Legend of Zelda")
Face My Fears (Harp / Electronic Synth Mix)
Into the Unknown (Harp / Piano / Orchestra)
Cross Encounter ~ Night in the Dark Dream
Who You Are (From "Shang-Chi and the Legend of the Ten Rings") [Harp Mix]
Happy Hair Day (From "Kingdom Hearts III")
Love in the Clouds: How To Train Your Dragon Harp Collection
You Can Hear the Cries of the Gymnopedies (from Final Fantasy 7)
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eeeca810a11ec0e1852897caf02918543db446518fdf591c8dfabd79aa9c3a6. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/USE831511284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193b677a9409090d104cadac4dc70c78bff350824ea166b6a6d90a66f9288268. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/QZ6K42000782.