Nguyễn Trần Trung Quân (born November 16, 1992) is a Vietnamese singer, vocal teacher, and music producer. After studying at the Vietnam National Academy of Music, Trung Quân appeared twice on Sao Mai
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 0xaab59edf43d3a6e103eb56a4f2aed12604f05c5f6aee92eb038cfae3b1dc4cd3. 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/c01ed891-5461-498e-9b18-e7e35f8ca53a.json and https://artists.proofprofile.net/proofs/artist/c01ed891-5461-498e-9b18-e7e35f8ca53a.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 0x5ad9fd5a971834770ddb05e8562300e8ef251e34e7b548d83a5f8d8e14208b59. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QM6MZ2252839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3aafacbf71f295b0ab661f81fcbe9c97a644c1228a43a222e13520f7d71c51. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/FRX201953252.
Anh Cần Thời Gian Để Trái Tim Mau Lành Lại
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba938c38d4a3c948e7f2225ab7b03af0a17351fc30a2f01a16edf27676c3a2b4. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/VNA0M1907854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x656860da6f59961addb1e519d65077af12bb95e715ea5c50de1d96dd66bd1b84. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FRX452263624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a98133fac4dd3db076ff8a77a061d016b4ea835e2cc326d23ae4314e215cd0f. 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/FRX762241727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720f560095d37c51b52fe5399c1532fb6bcc05ec960c089bea3579dd7a9fdeed. 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/FRX872234298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e2df6ae82a12e97bf584defadd2e93250b9690f2d5149bd36682d4e21d59b0. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/DGA052275677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73297ad6821f591965a5e4ef7e4f0312a49224d746a87e3dd7cba264b89aa5b. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/DGA072287191.
Tâm Ma (Theme Song From "Quỷ Cẩu") [feat. Megashock]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfacae6afa7dbbc590f9d0b73e4b226eb5aac31dab604fbfc19d63798b58ee31e. 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/VNA0M1933279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45bd92f46bad274bde4ae12b9486d1fd8646f9b2e2a7e6d6fc0807a1365bb2d. 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/US38Y2548258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5141f47b9d5ed7c18954ddc6f9c940c58094467dbb77aba206bd10ba96c493b5. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/US38Y2559106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x448efa781c7ee4a0ee1a1c08186d4c4a016802640386a095da0677d65e06172b. 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/QZN882237881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2cdc0e3bb47b14544671a7508ff52ee292c049643df96ec4a1a88413ecadf9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZN882237884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd52e7c13caf2e4dcd9af56ce67e53b3ab5b7fee92d65d6894de2cc1098994cf. 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/QZN882237889.