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 0x61c1f10640ac05a9fd59bcb5cce8dd17fd8e800ac546bb24d95f87e723cbe021. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dec3ff9d-813d-4502-9327-cbb0f3a93135.json and https://artists.proofprofile.net/proofs/artist/dec3ff9d-813d-4502-9327-cbb0f3a93135.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
THAY ĐÀN ĐỔI DÂY (LỖI ĐẠO CANG THƯỜNG Ost)
SAO KHÔNG VỀ THĂM EM (HƯƠNG ĐỒNG NỘI Ost)
BEST OF SAXOPHONE THANH PHAM (Romantic Love Song)
Ở ĐIỂM CHỜ TƯƠNG LAI | WHEN WE MEET | (SAXOPHONE)
NHẮM MẮT LẠI | EYES CLOSED | (SAXOPHONE)
NGÀY GIÓ NGỪNG TRÔI | WHEN THE WIND STOP | (SAXOPHONE)
HÃY Ở LẠI BÊN TÔ I | STAY WITH ME | (SAXOPHONE)
KẺ KHỜ MỘNG MƠ | THE FOOLS WHO DREAM | (SAXOPHONE)
TIẾNG ĐÀN THUỶ CHUNG (TƠ ĐỒNG VƯƠNG VẤN Ost)
GỌI GIẤC MƠ VỀ Ost (Em nhớ anh rất nhiều)
TÌNH YÊU TUYỆT VỜI (Ôi tình yêu tuyệt vời)
NỖI LÒNG DẠ CỔ PART 2 (TIẾNG ĐÀN THUỶ CHUNG)
NỖI LÒNG DẠ CỔ PART 3 (QUAY VỀ CỐ HƯƠNG)
NỖI LÒNG DẠ CỔ PART 1 (QUÊ HƯƠNG LẦM THAN)