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 0xff6825a8455cea37a25bf3741c1578c1ed54dc00ee82506271c0d608ec2f5a30. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/def74eb2-101c-4e94-a4b2-dbafcefacea8.json and https://artists.proofprofile.net/proofs/artist/def74eb2-101c-4e94-a4b2-dbafcefacea8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tuyển Tập Những Ca Khúc Trữ Tình Mới Nhất Của Khang Lê
Tuyen Tap Nhung Ca Khuc Tru Tinh Moi Nhat Cua Khang Le
Những Ca Khúc Bolero Remix Hay Nhất Của Khang Lê
Chuyện Tình Nàng Trinh Nữ Tên Thi (Remix Bolero)
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 0x17ba606e593c6c33d24c9c2af051facb28e7f9c10fc8e6e38796f4fe1cec3eb5. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:44:55Z), 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/VNR011031730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8880efe99704e774439b1066b283b982261aa187181d82de316f570f9ea532d4. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:17:45Z), 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/VNR011031733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7222bc987b0c1729606285b7e04f854416002c975005833f68b254dfded2a66. 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/VNR011031734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255535166bde0cacf26d2833a07febac62b89623638c2f1da9747d628a3a1195. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/VNR011031735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c40a39e27482d8628efa0d97e40ba16508446d5b093e2035c7502d7769d2208. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:28:30Z), 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/VNR011031736.
Nhung Ca Khuc Bolero Remix Hay Nhat Cua Khang Le
Liên Khúc Nhạc Sống Cha Cha Cha Hay Nhất
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8b0fc6b80bd91fb67368d7a1bd5817882090463a79cc8c9bf10f907cbb6656. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:06:16Z), 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/VNR011036792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc16866243161dffd062d9b6794a9c005c886d8b4ba9e73e11931ff3a50c8f3d. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:07:48Z), 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/VNR011036799.
Liên Khúc Xuân 2017 - Hoàng Tử Cha Cha Cha
Tuyển Tập Liên Khúc Remix - Chachacha Rumba - Hay Nhất Của Khang Lê
Liên Khúc Nhạc Sống Cha Cha Cha Giáng Sinh - Hoàng Tử Cha Cha Cha Khang Lê
Tuyển Tập Bolero Hay Nhất Khang Lê - Tứ Đại Mỹ Nhân
Liên Khúc Nhạc Sống Hay Nhất Mọi Thời Đại
Liên Khúc Nhạc Sống Chachacha Tuyệt Phẩm Lý Bất Hủ
Liên Khúc Cha Cha Cha Đỉnh Cao Nhạc Vàng
Tình Khúc Bất Hủ 01 Cố NS Tô Thanh Tùng - Xót Xa - Thà Em Đi Lấy Chồng
Tình Khúc Bất Hủ 02 Cố NS Tô Thanh Tùng - Giã Từ - Dòng Cửu Long
Nonstop Tình Nghèo Có Nhau - Duyên Phận - Chuyện Tình Không Dĩ Vãng
Liên Khúc Chachacha Tuyệt Đỉnh Nhạc Cưới
Rumba 01 - Đắp Mộ Cuộc Tình - Chiều Sân Ga - Thói Đời
Tuyển Tập Liên Khúc Hải Ngoại Và Nhạc Sống Chachacha
Liên Khúc 50 Bài Hát Tuyệt Đỉnh Chachacha Hay Nhất
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3e0dc50802a4c5bf915eac52d84d1fd9db2c7bc5de7d8fa73a4a973977c39b. 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/VNR011046026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ae766a8ad12852a64b5e3014cbd1bd77c5503f05be7cb68729c6efa6b0f046. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:01:26Z), 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/VNR011046027.
Liên Khúc Nhạc Sống Chachacha Đổi Thay - Dấu Chân Kỷ Niệm
Liên Khúc Cha Cha Cha Giáng Sinh - Tuyển Tập LK Noel Hay Nhất
Liên Khúc Nhạc Sống Chachacha Tuyển Tập Những Liên Khúc Mới Nhất
Liên Khúc Nhạc Sống Chachacha Làn Sóng Xanh
Liên Khúc Cha Cha Cha Giáng Sinh - Những Bài Hát Noel Hot Nhất
Liên Khúc Cha Cha Cha Chúc Tết - Tình Duyên Đầu Năm - Xuân Và Tuổi Trẻ
Liên Khúc Xuân Cha Cha Cha 4 - Liên Khúc Xuân Hay Nhất 2018
Liên Khúc Xuân Cha Cha Cha 2018 - Chúc Tết
Liên Khúc Nhạc Xuân 2018 Cha Cha Cha - Cánh Thiệp Đầu Xuân
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2fee51f3000fda25016787cb4ae13831df929c0bf66703afbd27648472ed9b7. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/VNR011050846.
Liên Khúc Cha Cha Cha / Hỏi Vợ Ngoại Thành
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916b14870f3d7ae48aeefc18965f929d8c759544a1b5b424bb1fd3ed889ae52e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/VNR012201273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x100a1b16b05200caa2264a569237a80264322f6919a7384b83b64c0411d71ec6. 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/VNR011131514.