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 0x6f4de28534ff19933a4d46adaa58cafd79f5b7d5af082948c7a7b8710d047995. 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/657d9fd5-b444-4c0b-ac19-250e3c685951.json and https://artists.proofprofile.net/proofs/artist/657d9fd5-b444-4c0b-ac19-250e3c685951.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Thạch Thảo - Chế Thanh - Tìm mãi thương yêu
Tuyển Tập Những Bài Hát Về Phật Giáo Của Chế Thanh
Tuyển Tập Những Bài Tân Cổ Hay Nhất Của Chế Thanh
Tuyển Tập Những Ca Khúc Trữ Tình Của Chế Thanh