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 0x578f4bb6ffe51ae12f45e758e30fab54a6952565602b352d5920a96587388c91. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5630bbac-dd16-47ed-ad68-e9f1e5adb168.json and https://artists.proofprofile.net/proofs/artist/5630bbac-dd16-47ed-ad68-e9f1e5adb168.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Người Nắm Tay Phải Buông Tay, Pt. 1 (From "Nụ Hôn Đầu Của Tôi ")
Người Nắm Tay Phải Buông Tay, Pt. 1 - From "Nụ Hôn Đầu Của Tôi "
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 0xe37fa386f78bb97bfa393f46c17957c276910e0070d63719813266f2087c572a. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/DGA0P2330008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84bb6c8906ff9d285bb710e91039213c3179e0ef2cabb624a43d696b68c21634. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZYHM2416534.
Tết Đến Rồi, Về Nhà Thôi (Air Cute Version 7)
Xuân Ơi, Đợi Nhé (Air Cute Beat Version 1)
Tết Đến Rồi, Về Nhà Thôi (Air Vinahouse Beat Version 5)
Xuân Ơi, Đợi Nhé (Air Deep Beat Version 3)
Tết Đến Rồi, Về Nhà Thôi (Air Vinahouse Version 4)
Tết Đến Rồi, Về Nhà Thôi (Air Deep Version 3)
Tết Đến Rồi, Về Nhà Thôi (Air Cute Beat Version 6)
Xuân Ơi, Đợi Nhé (Air Cute Beat Version 7)
Tết Đến Rồi, Về Nhà Thôi (Air Cute Version 6)
Xuân Ơi, Đợi Nhé (Air Vinahouse Beat Version 5)
Tết Đến Rồi, Về Nhà Thôi (Air Deep Beat Version 3)
Xuân Ơi, Đợi Nhé (Air Cute Beat Version 6)
Tết Đến Rồi, Về Nhà Thôi (Air Vinahouse Version 2)
Tết Đến Rồi, Về Nhà Thôi (Air Vinahouse Version 5)
Xuân Ơi, Đợi Nhé (Air Vinahouse Version 2)
Xuân Ơi, Đợi Nhé (Air Vinahouse Verion 4)
Xuân Ơi, Đợi Nhé (Air Vinahouse Beat Version 4)
Tết Đến Rồi, Về Nhà Thôi (Air Cute Beat Version 1)
Tết Đến Rồi, Về Nhà Thôi (Air Cute Beat Version 7)
Xuân Ơi, Đợi Nhé (Air Vinahouse Beat Version 2)
Tết Đến Rồi, Về Nhà Thôi (Air Vinahouse Beat Version 4)
Tết Đến Rồi, Về Nhà Thôi (Air Vinahouse Beat Version 2)
Tết Đến Rồi, Về Nhà Thôi (Air Cute Version 1)
Xuân Ơi, Đợi Nhé (Air Vinahouse Version 5)
Tết Đến Rồi, Về Nhà Thôi (Air Lofi Beat)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9649df2c47070dbf317285533d54190e36d7870b7be8fc238ec04746e761afe0. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/VNA2F2301748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfaeaab9fb474ea619568e2a2221fa390a48c48eff2e43daf0ce77f68f3e69ba. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZYHM2419565.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00b37ab4a8c279fa4541fae7a14a4bd9e43857b2cd4699efa58de835670621b. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/QZFYZ1991462.