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 0x5186aa2aead3a417f0e38b7e00147f89908eee50eb79b655c2a12868fbc03520. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e1e9a6a6-5adb-46f7-8e52-d9241661c3ef.json and https://artists.proofprofile.net/proofs/artist/e1e9a6a6-5adb-46f7-8e52-d9241661c3ef.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 → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x396dc6c33869b8fb89da9b6562bc4560d2d2e913d5e2147a29665f6d1a15a159. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZNWU2316441.
TAM BÁI HỒNG TRẦN LƯƠNG (Prod. Hoàng Remix)
NGHE CHƯA HẾT BẢN TÌNH CA RƠI CHƯA HẾT NƯỚC MẮT | Lời Việt: Tuyên Chính (NProx Remix)
Thiên Linh Linh Địa Linh Linh (Lời Việt)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34508253f4f3bbae389870baffb1266cb6f30af53401d5d4d867eb58342fee12. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:36:11Z), 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/QZWFQ2365440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a68c4158dc92014f9a97feeb712102cd85d6c0c5914500c294145548dd871b. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QMFMG2374789.
TÔI CHÚC EM ĐÀO HOA KHÔ HÉO (KENPHAM Remix)