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 0x673d4b27d11af67baa5d4441563b6275acad4c46fc894b8af848e37baa55812a. Chain 2 (Bitcoin): anchored in block 954593 (2026-06-20T19:46:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bd5102de-4c28-4a57-92dd-a9210b3a3834.json and https://artists.proofprofile.net/proofs/artist/bd5102de-4c28-4a57-92dd-a9210b3a3834.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tiếc Cho Một Mối Tình - Huyền Zoe (Lofi Ver.)
Kẻ Si Tình Ngồi Ôm Mộng Mơ - Thành Đạt (Lofi Ver.)
Em Từng Là Thanh Xuân ( Lofi Ver. ) - Nam Hy
Thương Lắm Mình Ơi ( Lofi Ver. ) - Huyền Zoe
Ngày Xuân Long Phụng Sum Vầy ( Lofi Ver. )
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 0xb4d91eab234d639735a81ac53573b25ebd882f2a17a96a255eb9e94096f1b73e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZWBE2335864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd65c5de9f0890d49acb62756b655039c9eb3b5a68d84db17b6a85047e0c9ff. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:54:19Z), 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/QZWBE2358197.
Tổn Thương Đừng Tổn Thương Em (Lofi Ver)
Kiếp Này Nợ Bản Thân Quá Nhiều (Lofi Ver)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a33eda718b5d31b4e8dea13d4e1ec6b3b33a73986c8a6876794977fb09e0447. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZYHM2416819.
Mùa Hoa Oải Hương Lofi (Ngân Ngân Cover)