Nguyễn Trúc Nhân (born 30 November 1991), also simply known as Trúc Nhân, is a Vietnamese singer. He was known for participating in The Voice of Vietnam. Trúc Nhân has had 5 nominations and won 3 time
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 0x4af863a467cddedb7fcd5b531df03f0df3d9bd2221fa585098f881bd6c821c76. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5e78c85c-d7f2-4a0c-9c6c-c014b4143a1a.json and https://artists.proofprofile.net/proofs/artist/5e78c85c-d7f2-4a0c-9c6c-c014b4143a1a.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af72efbe6dd8a3033723a08e1ca809985092dc718909170b4150547a0072184. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QM4TX2466445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b420de452ff36d08bdf45ba2ff1f9f024c22c684d67b0e7fd8c329c1e0c3e4b. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/QMFME2299002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031b7b4758f33565e1985d0a81f52fcd578e25654e06697bcc8a3bf16f01caf2. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:03:43Z), 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/VNR011020602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed697a91dce947ad6ffc410fa685625b83478e3debea8e93340b18b6eaaf37a. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/VNR011020363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4335baba2b5827ac0f4680fcab8fb4464280dcba93a6f317c754fdb2f795efee. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/VNR011020364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f6244c21a0115710a7d856bc9c92300b58e716bb80e67fdf0ef952a80eab0d1. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/VNR011020603.
Mấy Khi Mà Sướng Thế Này (Anh Trai Yêu Quái OST)
Mấy Khi Mà Sướng Thế Này (Theme Song From "Anh Trai Yêu Quái")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d9a9d280df2c3ef138d93b4142f84b1ea2ec947bfbeed408d15373eb7ddb96. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/VNA0M1906787.
Cám Ơn Đã Chung Đường (From "Pháp Sư Mù")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf79e6f59ce0773d4d3781cfde9d8621a04dffe84466c8ab98c1ff67169b4d9e. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QMDA72289025.
Nếu Một Mai Tôi Bay Lên Trời - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92721953415d9e7426b93236bb30fd9014b8c57f23bf5c40ebdcc3460bb08ea. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FRX281932252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1563b9f23b2dced9581f691e7a120e5436c533f107a8e7c53212a41478a528a. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:06:11Z), 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/VNR011051548.
Xóm Lom Com (Theme Song From "Chuyện Xóm Tui")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16bcf23e122b803a6ffd0f54b1aecbde1e413737c84c387875ef8a9afbda5a7. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/VNA0M1909325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x605896795f7bcf1797ea039634f84d7ce7e7594dddd98b8112e26f39aeb50722. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:24:47Z), 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/DGA082271493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19e64b3ca86205dac897dd3f7b8d5afe0d97e6714cb2a60bf0f2d67bd84f20a. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:58:57Z), 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/FRX762358122.
Siêu Nhân Không Áo Choàng (Lofi Version)
Siêu Nhân Không Áo Choàng - Lofi Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d343d3e9b3f8703c096dc2f891239d8262efc87507caec123be56ee97f4d20c. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/FRX872333561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b8977aafbff7f5dc1036e8ca47e8e346ecc1f444e65f47d59b91c8bafb6ded. Chain 2 (Bitcoin): anchored in block 957535 (2026-07-11T07:11:01Z), 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/FRX762326150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7db8235c5e3b48799b34ff30ef0b21b789567cc47ad37029308c0518614c720. 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/VNA092402346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a0e821e3657fd18aac1ca3b2263dc1ceaba4ba22c3394f68e72856a5aa31a3. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/VNR012400895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d536dedf69ac4458334e26b661a359c92b88bee1ee3400415a34c01c2d80dae. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/VNA0F2322606.
Trạm 1: Xuân Hạ Thu Đông, rồi lại Xuân 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc4244e08d97853584bee1adb5d6466bffb2783c4c46e306ea8ce94f3e1e9ca. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/VNA0R2000813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700a7190893401fde499c3996e1be0199eac259a8304f9188aab004c1b928664. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/VNA0R2000814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dce34799f5531bd230b9a8ca1d7618a92295b0ea89a03f89dba882e1fdfe6f6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/VNA0R2000816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa658f96353cbe5780a13e7e68f6a55c8a342ca1621935f5ca7410e4a7bb21bb2. 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/VNA0R2000822.
Trạm 4: Xuân Hạ Thu Đông, rồi lại Xuân 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e6991676a3a871ed2dfd533405dc4e0e346a2d9e5caec19e03b06aed9ec903. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/VNA0R2000914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7e623139bbdb98f130be694ea5fa35f00a309338e566b69cc79ac48d7a0371. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/VNA0R2000917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fbf6c5e294476c8678dfed9f1ef4ab3dd4435cf99e6570393b201d56ca76674. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/VNA0R2000896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27dd034614b44c457e5fea3d106c8caabeba8a9082ce60c474f83e09da38fe8. 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/VNA0R2000898.