1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x5b0c5d13294254f647e90f19ebc4cf18dd00ce51e3a85dd0f68221998a48b4a7. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e8fd9bdb-cb89-4dc7-b47e-039fd918ffe7.json and https://artists.proofprofile.net/proofs/artist/e8fd9bdb-cb89-4dc7-b47e-039fd918ffe7.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 → block OTSBitcoinBlock must exist at that height 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 0x4c7841ec45d35ee95e104da68f7fc4ab9dbfb53942e0c74a379c4806e5291f60. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QM48F0740904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7287aad2ac1c97c4b7248b96865f8320a981250f591925f9423d3c4063d4ee60. 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/QM48F0740908.
LK Áo Em Chưa Mặc Một Lần & Vòng Nhẫn Cưới
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dfe1a8a232ee2c3bf0c28935f37b5ed9e13bdf65f81fa7d7bf47f69cc0abca1. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:38:43Z), 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/QM48F1149401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059fd303a462334210810305630ee7173918a3343330fa18cc89d35faa5dd131. 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/QM48F1149402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2576abffb5d055ded83e4983c749ee8e98dd903f330b592540f764dd5ecad00f. 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/QM48F1149406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c35a6a437478ba3cd2c3c4fcaa0cf2120b6846c3d81e39dc5cf2134b5f2051. 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/QM48F1149407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5065442015e1d4fb7fdbeae8ad00497def2ef6f4047652041ea4e3f1fa1b8a. 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/QMBZ91913316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57135aec8e48ee9d02be39233b9c9f2f9bd2829db7e5cf1964640746e9cb3643. 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/QM48F1656408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b6590086b29963badd6ce696ac65a0d3d89413a08dec6b8310b857d9e2f23b. 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/QMBZ91911643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1acfe2fad7a2713e1555866afa5a0cf2d81515ee470bae9ca4053037a57346d. 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/QMBZ91911649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x450682918e631d9d629c49926bc2e9431a81381dbedd6f26a8f5a777c2799cf5. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QMBZ91911650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0175da485128a3a454a23039f2e2890da8524d92b95c24b53fdd1967b4e434da. 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/QMBZ91911651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b50514e39b9016f446e848b66219013fead6381e61abbd553d12ababc48780. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QMBZ91911652.
Nuoc Non Ngan Dam Ra Di (feat. Quang Le)
LK Ao Em Chua Mac Mot Lan/ Vong Nhan Cuoi (feat. Quang Le)
Neu Chung Minh Cach Tro (feat. Mai Quoc Huy)
Cho Tinh Yeu Chung Minh (feat. Mai Quoc Huy)
Ruoc Tinh Ve Voi Que Huong (feat. The Son)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa767d5fa0557eb2a3ddf9132224ac5375079c38c90ce188273057b709a09d66d. 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/VNA0F2007874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6148e8be08118a623da38e6d05be43d23ff3ea23233e56c27e2260e13097441. Chain 2 (Bitcoin): anchored in block 957527 (2026-07-11T06:08:55Z), 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/QM48F2000202.
Chuyện Kể Về Các Loài Hoa (Huyền Sử Năm Sắc Hoa)
Mảnh Trăng Gầy - Tình Khúc Tuấn Sông Thu
LK Ngày Xuân Tái Ngộ & Mùa Xuân Bên Nhau
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a33c4c3b04c01434ebb14497ea8e5251c0339599acbaf8f0fa9184672b5a16. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/QT3F32503823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd510ce726dee2eac6bba0115c7c34b931e8d9cb460b4fe457117078de590fa. 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/QMBZ91911663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b34978784d552e7d32addbce1bda5910e2e0f3e202b3f6b00632b988c9e6e6. 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/QM48F1556107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b522a4019251eeb16df721039c040212e13a919df95eaf9128a211e53b89c3. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/VNA0F2312078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9002dadfe8f6a4b99ffc014346663949f32433c72b502c41ade98e65c58685b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/VNA0F2312083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a7f359d939f1ea006d0db1b41e163498620ea28435c1da192df43a608c033a. 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/QM48F1962108.