Trần Minh Hiếu (born 28 September 1999), known professionally as Hieuthuhai; stylized in all caps), is a Vietnamese rapper, singer-songwriter, and television personality. He is a member of the music c
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 0x86db694a01c5c11c2b0c2c4b64adac4633de51a8ee22f4310ad7f221b5b94c20. 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/75aee59a-248d-466a-9b8c-e1bf0750ea29.json and https://artists.proofprofile.net/proofs/artist/75aee59a-248d-466a-9b8c-e1bf0750ea29.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 0xdb00b51f836c926309021e69db99c2b2b2766159a5ae478b6cfd9029466fd54f. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/VNA0M1907907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2da9b041432eeb00a865558c07127fa5a93a0a90aea04251306a36045d89ca. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/VNA092201169.
Một Công Đôi Việc (feat. HURRYKNG, HIEUTHUHAI & CilTee)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6067799a0b60e11024c1718c249bdcd46017380df6ca8b08f687f366569d962. 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/US38Y2417283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7b3563d89e2f7d7025a40921b1511dd9f348101d65016c6d88418c5dbd78618. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SGUM72000181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a2ad5e0fb4966983cd00c3121a80f79a2def893beef125cef3e6cde3b0ec33. 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/SGUM72000264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3cb2e6a767c6fe35528ee3e7627f79a634334679c8b3a9ec4184f16a1b1703c. 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/SGUM72000270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe136238ee95996979dc36468a147e4232473ed9651e2c8cabfcf5f993d46d91. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/SGUM72000142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6726ae7809e41c871c0931d4be9073c9224d8dd550fb824f86a405a850091b7e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SGUM72000215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f68ccea93a7232e2c96c090584e14052dcd0695a18b619654320c8e13770cb8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/VNA0M1909197.
Lời Đường Mật (feat. HIEUTHUHAI) - Remix
Lời Đường Mật (feat. HIEUTHUHAI) [Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7887e6a1046cb34adaa8b0320b6494d16b8d46371e07dde1647da03a16aabe09. 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/VNA0M1909669.
NGÁO NGƠ (feat. HIEUTHUHAI, ERIK, Anh Tú Atus, JSOL & Orange)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59715b7469885d5b017bcbd88110c405e628d1d26710f7420499e91acbea3cc9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/US38Y2418913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9e1923a1107f7c913c3dd9a13081fd7befdfcfaee0ea763d8da830fb7259f2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/US38Y2504852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11cba00d78e2e90297377ecdf0c854b0fc9f4622225c20d633e90187677b54fd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/US38Y2504853.