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 0x13a9092e0304bbec853ef9f12b429e1551bef1a160ea7910c5cf526701169491. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/afe1c165-f485-42fe-991d-728d02e023a4.json and https://artists.proofprofile.net/proofs/artist/afe1c165-f485-42fe-991d-728d02e023a4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Liên Khúc Mưa Chiều Kỷ Niệm – Phút Cuối – Định Mệnh
Liên Khúc Biển Tình & Sao Anh Nỡ Đành Quên
Phi Điệp Năm Cánh Trắng Tôi Yêu (Deep House Remix)
Phi Điệp Năm Cánh Trắng Tôi Yêu - Deep House Remix
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Phi Điệp Năm Cánh Trắng Tôi Yêu - Bolero
Anh Biết Em Đi Chẳng Trở Về/Con Đường Xưa Em Đi
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 0x48298f2c3b9e4fe0eedd59998b57b51d87c085a46172d64d72c24ee739ee9451. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FR10S2240226.