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 0x4eab51c5fd0da8b25e7c99312d7ec140922514f5ade9c6d46cc96f96512b80e0. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/acda23e9-c09f-4b3a-9db2-cdae83be8579.json and https://artists.proofprofile.net/proofs/artist/acda23e9-c09f-4b3a-9db2-cdae83be8579.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Journey of the Heart (A Ni No Kuni Tribute)
Path Of Kami Prologue (Original Game Soundtrack)
Pilgrim's Destiny (Original Game Soundtrack)
A Funeral Of Flowers (From "Fire Emblem: Three Houses")
Divinity: Original Sin 2 - Piano Arrangements
Lullaby of Woe (The Witcher 3: Wild Hunt)
Anchored Hearts: A Tale of Destiny (Original Game Soundtrack)
舞台『言の葉の庭～The Garden of Words～』 (Soundtrack)
Instrument of Surrender (from "Disco Elysium")
Final Fantasy Tactics Timelines Piano Collection