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 0xfd281e87e07af5652388a9b04e6897c4c17c3117ed55428e7b53572a1aecfac9. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5a4160a1-f3c6-4473-bbcb-ad9b5b0d281d.json and https://artists.proofprofile.net/proofs/artist/5a4160a1-f3c6-4473-bbcb-ad9b5b0d281d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
A song that made the teacher's face cloudy in a university class on the theme of local introduction
「地元を紹介しよう」と言う大学のプレゼンで発表して教授の顔を曇らせた曲
USER'S MANUAL FOR THE SALES MANAGEMENT ROCKN'ROLL
セールス・マネジメント・ロックンロールの手引き
午前二時のネオンといつかは明ける夜
2AM Neon and The Night Will Dawn Someday