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 0x1b1e08f6983c387ffaba50303b44c6290c9903fc5689046bb5192763d70b290c. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/60564270-ec2c-4bed-a7db-5efb081b2bb4.json and https://artists.proofprofile.net/proofs/artist/60564270-ec2c-4bed-a7db-5efb081b2bb4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dalena Tuyệt phẩm - Từ ngày yêu anh (Hải Âu)
Một chút mặt trời trong ly nước lạnh - You are my shunshine
Biệt khúc cho người yêu - Im leaving you
Mỗi người một niềm hạnh phúc - One day is yes one day is no
Nghìn trùng sóng vỗ - I heard the sea call my name
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 0x9690b31c1597cf9ad87458a668734b958c63995911c12cc53e52d7c243acfb13. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZGCD1803388.
Nhật Trường - Trần Thiện Thanh: Anh không chết đâu anh (ASIA 50)
Trúc Hồ, Trầm Tử Thiêng - Bước chân Việt Nam (ASIA 54)
Dance Collection - Xa nhau... Ta xa nhau
Và Con Tim Đã Vui Trở Lại - Nhạc Tình Đức Huy 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c0895944e652b6d54f661d688b5256f9386b9b3a886bbf5120b77f189eb4e32. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM4TW2077383.
Liên Khúc Chuyện Giàn Thiên Lý (Asia 232)