1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d2ddb2163a041ec176bc638e1ebbd4e9cd8506cd61c83cdb24f839281b4c32. Chain 2 (Bitcoin): anchored in block 953750 (2026-06-15T06:12:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a931be1d-099b-49ad-9d81-e3e274bfe8d6.json and https://artists.proofprofile.net/proofs/artist/a931be1d-099b-49ad-9d81-e3e274bfe8d6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
サクノスを除いては破るあたわざる堅砦
ウサギとカメの競争に関する驚くべき真相
The Fortress Unvanquishable, Save for Sacnoth
The True History of the Hare and the Tortoise
In the woods beneath the cherry blossoms in full bloom
By My Lonely (feat. Bandgang Lonnie Bands)
Think It's A Game (feat. Big Sad & Rucci)