Trần Thùy Chi (born May 4, 1990) is a Vietnamese singer better known by her stage name Thùy Chi. She won the People's Choice prize in the annual songwriting contest Bai Hat Viet (Vietnamese Song) at t
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 0xdbe3d7adf7d30921764574ae017242c9712b15fa06db3058115e0d39f276a66d. 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/769140d0-e26c-4992-897a-9bd49f11445a.json and https://artists.proofprofile.net/proofs/artist/769140d0-e26c-4992-897a-9bd49f11445a.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 0x713219a2185f1d57b362f3c005e45392b7f2d9a49bb821cf6c425a98a8dd5030. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/VNR011015858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x433ff80b3a43ea51dcb06788201ff220d169aaaef1d8b3923f23f619ac80ac44. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/VNR011015864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0031bba46e02072e669991def887cf34952c44a947ac8d0af3057b172a2bc045. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/VNR011015867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb1ce78ac40c7ce3fe6cb92b63f9a154fac3b63df8965f96901205f73550202. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/VNR011049793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb26a05c8d8f6f3ac1b90540e252c665510aec660aa260e6966b75b5ba8cd5557. 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/VNR011049798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad2f42979317a09e081db27d4dda3080e48bd60c07bb2996d21f99b0b486d0f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/VNR011049800.
Mua Oai Huong Nam Ay - Lavender's Love Story (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73626a3c430b62292693f8580e58df88bd2b93e07fb81c63dd6ff24f478aa861. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/VNR011038644.
Nàng Thơ Xứ Huế (From "Nàng Thơ Xứ Huế" Series)
Nói Chia Tay Thật Khó (Acoustic Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2d0e0a8c069dd261363b1ed2a7507e7aae622979cd396c73c9f380bb48c8dd. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/VNCOM1980801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05eac3001a9d5542237d919abd3b9e8aafd8a8cd61490b751ae89b3004a378c1. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:44:06Z), 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/FR59R2238141.
Mùa Oải Hương Năm Ấy (From "Mùa Oải Hương Năm Ấy")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fac4093b9ba0e6bb17fe301890e51ff7117655970b2264c8a2c1d9ce0e26c77. 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/VNA092004528.
Nói Chia Tay Thật Khó - Acoustic Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78cd0faa312923f924baabc630b67a33f9b28b58cf41bb7a0e4ca8be7604b792. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/VNA0M1909576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d8844398b54870ebac33862cd8c0af7c0dd334a0fbd906d8c6b6aea62d0934. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T19:03:02Z), 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/VNA0M1911339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3cbf2af1dff42354f92d2bc56cf1699c63344222f487e5e923aa0e3b2f3f9b. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/GBSMU9588612.
Mùa Oải Hương Năm Ấy (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93fec4080042b593231069fb07e9be123daeed5529a0ef40250dc6d96161ed1. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:55:23Z), 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/GBSMU9886751.
Không Sao Mà, Em Đây Rồi (Thong Dong Mà Hát)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d7b1c02bab5ac9fb75b79dd253cd09ce769d7e2367858f47cf7f5b69cd887a. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:58:19Z), 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/VNA0M1927859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c90c72d6a818000918c815bfef17e0555dfffa9e534894ee2b356a5f858fa83. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:38:33Z), 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/QMBZ92303005.
Chân trời và những đám mây (Liveshow "Về Nhà Về Giữa Thiên Nhiên")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53335ee03f6b75bd05cd0cab34a9b2a4a70c21f1fe9bbab42421e23abf39e426. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/VNA0R2001039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51836c00dee462ee5186cb3fe04fcab3ae4a346fce29bb94263d3a28d1fbd976. 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/VNA0R2001013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b8eaef2f61de6665c3fd3c9322e942856310f3b832a1ae01d17e7edc4516bd. 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/VNA0R2001004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70130477ae3b176ba7dedaf17e2b5f4d18adf52edc60d0cc73ed48c20f0d7ea. 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/SGUM72000268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a7508f291eb4b041aebb46de8a65a9044f02ebac6801a679449e52a3d73584. 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/US38Y2504857.
Mashup: Mùa Xuân Đầu Tiên - Phút Giao Thừa Lặng Lẽ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf505ca727ebac4c09fd76c4b145da0a2b87502d7e68149a29ef0102b0ad930b2. 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/US38Y2504862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed5f629ebe47445233e2df623a505fe230ce3f0d6aa57d852cd436f31392c6e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/VNA0M1930883.
Tập 18: The Masked Singer Vietnam All-star Concert 2023
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc982c8ccf0e63c96562bfc7e4cc559bb3f864fd551a088f3b801403e929797. 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/US38Y2401004.