Khuat Duy Vinh, stage name Vinh Khuat, is a Vietnamese-German male singer, songwriter and music producer. Biography Vinh Khuat was born on March 20, 1990, in Hanoi and moved to Hamelin, Germany at
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 0x548b5b5c2bc138591aa167dd08f9f8abce36fb6e9d3bc85a4054e27f0b8b915a. 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/e3408a3a-ee62-45cd-81c9-f20019dbb208.json and https://artists.proofprofile.net/proofs/artist/e3408a3a-ee62-45cd-81c9-f20019dbb208.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 0x49dc9d15e447deda6c41d6da42e60f6b744bcfdc1c05d2a1e404cee7198affd1. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZHN62096443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6db55b3a6db7170fa055db52522a24a0e2343a26afe3c9668b9ce2d69e6e0fa. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZHN62096444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124f8a891bafd6cf58cbaa3cb336a7021f1c49343ec6b92807ad4a99481350d8. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZHN62096447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e8f97c7649885a788d95e6b5cfba3c842013db0397be91c1fa43675bd6dc63. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZFZ72079304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb344f108f52cf8cdc237ece8241811c1992baebdf289f402a223e93b4ed525. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZHN72015850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc473b27487512e23495f6baa6daea0fe6637a4b8ef961ddca640f73fcdc9a13f. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZES62150708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ff7a3ea936b9386e7ccc813ba1c91447599cbbbb5340eec4377131bacc79a0. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QZK6K2182764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d565e1360acbf7b6a92bbabdedfadd7f4ebb7b6a01405e66666e43441baaba. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZMEN2186808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96224734f9577259dc026c972e78717af72ec5a83c219fd1241231c6ad8fb5e. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T10:33:49Z), 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/QZNWV2105493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde782312c48061f72d98de070827018c100649ce5039f54fe7872b2186ca2cfa. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZES52276181.
A cloudy day (It sucks that I still miss you)
Chưa có ai ngày Valentine (Happy Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed15bc2e60b14dcbf051067987d551b4b8e88d8c0cb3008a38a6ddbca8b96ace. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/QZK6G2401743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4fc29e1b360023a9319c75eaa9b0efffa9999314cbfc01709f9949f636380a2. 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/QZWFS2517063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60b2e1a11cdc52a2e4937562ccc7d43a989feb6c6a55fbb868c146b81e6bad5e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZWFS2517069.