Hồ Thị Ngọc Hà (born 25 November 1984), known professionally as Hồ Ngọc Hà, is a Vietnamese singer, model, and actress. She began her singing career in 2004 with her debut album 24 Hours 7 Days. She h
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 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 0x7099da4045ac448c3a1aea52c75023b471fc14b870c679c70a5668a9d7e4fbd8. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f7ed7b6d-72e0-4522-a365-d8cac55dc98a.json and https://artists.proofprofile.net/proofs/artist/f7ed7b6d-72e0-4522-a365-d8cac55dc98a.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 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 0xfcd7b1e08fb14621b0be7f28b672ba235973346ed9b71296c2e81b3ca1c099ab. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRX762383555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa991741086b1319bf585ecf257986823caaf07d9998afc751a2ff6ccf17660. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR10S2267777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a07b1c4c2279ae95771affe8a2fc94f012c357d97f6607b6fab8f0825aa23a5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/VNA0F2316670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17871eb0f9263add5e5c6dea07465df1b56ee0f023a3c02ec28b8f8f4bc1c63b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/VNA0F1782055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689d00acb028363b6e8b78af271867ddd8610292bf571d19f85fbac68af74f54. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/VNA0F1782056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3d743cb4b951bcb0db67117ffb34912a0873b697ae69869e9e863dce236185. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/VNA0F1782057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd91e99ff1fe8482d490c69574441e6f069d58b1838a521deebdbc347d13f1c5d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/VNA0F1782058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04835ed0e125da3cf51389a62279a35b542cdb681210049fc55b122f5c7b55d1. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/VNA0F1782059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x149a59a5a7b8696595b1048039360cff3b3bd62792ac11e966e273e9ce73685f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/VNA0F1782061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a589f957251f03faf4a50c1b732797e7aa360c8256d84bf9bc86b473132cd2. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/VNA0F1782062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601b4d4e48ab6ab01e9bd5fb8345019602e307adad2ab5b3fa79763f109dad0b. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/VNA0F1782063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e501cb6cca9f700b32383cb96051c774d5bb53768fbee0087d766b9342bf2a2. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/VNA0F1782064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e5dcf0dfad0dbb624a5f7d371129bb464f17b37a612bf68ff271ba4dcc5660b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/VNA0F1782065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ea4fd3cd59cb6b8821a506c84a5fbf33604d0cf8ed689a4ea233945e8558f4. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/VNA0F1782066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d601539ae728943c54715c7270a4710ff02df23fcb4b154a48f686e26686cca. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/VNA0F1782067.
LK: Giấc mơ chỉ là giấc mơ - Đêm nghe tiếng mưa - Yêu thương mong manh
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241b7a8be128f0f099bba0b87d44d338c7408798060d6264502aea1387bc3751. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/VNA0F1782068.
LK: Một lần cuối thôi - Hãy nói với em - Sao ta lặng im
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429917ec527ee28aaa29a46d20a1376d5220395befb26a545ea04c577c9b5369. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/VNA0F1782069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5bdaee88d82721a1b82273d5cc46a6968ea3c76c326321809a96c3429803dea. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/VNA0F1782070.
LK: Xa em - Nỗi nhớ đầy vơi - Tình về nơi đâu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315e96d7230fef49632da7af1a14d2000a98012c14c0b86a36889d84bd2f8d4a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/VNA0F1782071.