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 0x36952cac57844767a5c41c08160354dee0f1db562ace605058399f1b28aa4387. 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/bfb4e22f-e72f-4a20-a62c-ba6461dcc593.json and https://artists.proofprofile.net/proofs/artist/bfb4e22f-e72f-4a20-a62c-ba6461dcc593.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tiếng Hát Thùy Dương Đặc Biệt 4 (Quê Hương Nỗi Nhớ)
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 0xf47f3ca94d162b14256debb9d7e08b340156086dc25d9390d914643b5e2dcabe. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZGCD1801806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x618cae62ef953e12aaf93a1e960b2eb57fface4269879659f1408fa9437f46e5. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZGCD1801808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5fe44f62e5685b439e3c492ca02dbd6660d8478181bc9560bd8f2b012b55571. 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/QZGCD1801810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b87177655d452fffc255dc8b7741a87dd5f58fc7d2a5116d0395e68def0aeb. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T10:12:17Z), 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/QZGCD1801813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82cf9738befc2800fb69e9745e61931d397f5766947a651a28988de2b9f4f9c0. 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/QZGCD1801721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478c5e6d1fad5140191d81475367107ae4add302838d9983c544fab857147ff3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZGCD1801724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38cc0de99c12b4a4baae4d3a47688f8c4865adcc3b75957a6ab7c80a84d2afb9. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QZGCD1801727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4570e64ac2585fd653a6c84360f2e60774332c5a9aaeaec3b06430c32ba32df8. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZGCD1801730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa070bd93aac29070e30105c5cde68e84e69d52aacab7ef11ac0955eda6eb67. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USCGJ1931393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf4179d35f2c354247f8fc9406b319b1061291001748445bd724d4b6c90f642. 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/USCGJ1931395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ada38f25956bb4485f09b50b61ed5c6e9d0a5d73ac934ba57b6b4d0b767f52e. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/USCGJ1931396.
Những Ca Khúc Mang Âm Hưởng Dân Ca Nam Bộ
Thùy Dương Và Tình Khúc Bolero Tuyển Chọn
Tuyển Tập Những Ca Khúc Trữ Tình Của Thùy Dương
Tuyển Tập Những Ca Khúc Trữ Tình Của Thùy Dương 2
Tuyển Tập Những Ca Khúc Mang Âm Hưởng Dân Ca - Vọng Cổ
Tuyển Tập Những Dạ Khúc Buồn Bolero Thùy Dương
Tuyển Tập Những Tình Khúc Vàng Bolero Thùy Dương
LK Dạ Cổ Hoài Lang/Về Đâu Mái Tóc Người Thương
Liên Khúc Một Lần Dang Dở / Một Mình Thôi
Liên Khúc Tình Nghèo Có Nhau / Dù Anh Nghèo
Liên Khúc Vọng Cổ Buồn / Tiếng Thạch Sùng
Liên Khúc Đêm Gành Hào Nghe Điệu Hoài Lang / Dạ Cổ Hoài Lang
Liên Khúc Con Đường Xưa Em Đi - Đừng Nói Xa Nhau
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x139edb97d0fb3816586e8e62119c0230812e9c9c0671348377af932bcd67c90a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX282269891.
Liên Khúc Ngày Xuân Thăm Nhau - Xuân Này Con Sẽ Về
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4933ad0ac264d9efba7b3103bfb3ca12f60a9951b0e67270e4fb4fb4acd91a1. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZGCD1808371.
Nhật Trường - Trần Thiện Thanh 2 (ASIA 61)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d234181285396c2281086637e26991da84016de07ea5294b3c23d42abd81e6. 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/QZGCD1806325.
Lá thư từ chiến trường 2: Cánh hoa thời loạn (ASIA 66)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x395930f2f035c02acbc47ffcffce718fb6a0bc474edaf765ca8d96e1c798276d. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZGCD1806201.