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 entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148b9472a2e15779ea020f598330ddb290cf29395f2e4451050baf5eeea86792. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1a035a71-c88a-494b-bc86-4f1a9710a5e8.json and https://artists.proofprofile.net/proofs/artist/1a035a71-c88a-494b-bc86-4f1a9710a5e8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eeaf44ffe212f2c0be4f1c45fd5dad17c88c3cf0b44d84f6b549b3b15dd8ac2. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA0F1717785.
Không Thể Cùng Nhau Suốt Kiếp / Tình Yêu Trên Dòng Sông Quan Họ (Mashup)
Ca Dao Em Và Tôi (Tình Yêu Bên Dòng Sông Quan Họ)
Ca Dao Em Và Tôi - Tình Yêu Bên Dòng Sông Quan Họ
Dòng Sông Quê Anh, Dòng Sông Quê Em (From "Những Ân Tình Xưa")
Dòng Sông Quê Anh, Dòng Sông Quê Em - From "Những Ân Tình Xưa"
Rủ Nhau Đi Hái Măng Rừng - Short Version
Giữa Mạc Tư Khoa Nghe Câu Hò Ví Giặm - Short Version