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 0x18aa3fb0a88aa192eeae6fcbc8cf51906be413dc7ab9c0c9db61f92cea4140ef. 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/4aba0d4b-84f0-45f1-bff7-e6d0b644cc93.json and https://artists.proofprofile.net/proofs/artist/4aba0d4b-84f0-45f1-bff7-e6d0b644cc93.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 0x57af3e6954d923b7013336840a026d00ef29e4ee0a6df900d12f002e42a9afbf. 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/FRX202231494.
Bông Hoa Chẳng Thuộc Về Ta (Solo Version)
Tình Đẹp Đến Mấy Cũng Tàn (Ciray Vinahouse)
Tình Đẹp Đến Mấy Cũng Tàn (Lofi Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec64eaee70083e7faa31286a4597982452fa5e81ef090a36a6baea9d43c1f82. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/VNA0M1908463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ecd31a828d15748e6e1c90406ed14c3c87b943f616b75478bf092b3a12fb641. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/VNA0M1908464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2fe0e2e6ab56ddcfb2f2acd3809ae380938eeec7f64310b462d8298cc53dccf. 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/DGA072293532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8d56a98ebac84e1088c61cce044f0a15079b73fd49fd7730148e38da235765. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/FRX282295860.
Bông Hoa Chẳng Thuộc Về Ta (Lofi Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892268d46f0fe0f867fe4c5a6cceaaa49a28f0d805257ce63976798b9933c33b. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/VNA0M1923695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f2a1189f1ee47d64b19c9a1b5a0a61e32e6551d64d2126d6ed516b9ed9d2e4b. 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/VNA0M1926024.
Đừng Khiến Nhau Thành Người Yêu Cũ (Ciray Remix)
Đừng Khiến Nhau Thành Người Yêu Cũ (Andy EDM)
Đừng Khiến Nhau Thành Người Yêu Cũ (DJ Trang Moon Remix)
Đừng Khiến Nhau Thành Người Yêu Cũ - DJ Trang Moon Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d8b42a0a93a8bfcfc41bea3d6a97dec7665cc9477197c1c63b4558b94e0e70f. 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/FRX282257688.
Đừng Khiến Nhau Thành Người Yêu Cũ (VUX Lofi)
Đừng Khiến Nhau Thành Người Yêu Cũ (Ciray Lofi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e3cd15b27887a9281ebf6aef455a7f61361ad416ca17afe01978f9d7bd5739. 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/FRX872437531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc30de67bce39e3f09f9c128ac1d7dd9bc5ac95905ed61f1006f815baa5ee60c. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/FRX872437532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb37e70e78718dea2959aca3736635d928b5899b3185356712ba8c7a7ee02daeb. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/FRX872437536.
Người Lạ Thoáng Qua - Vuhuynh, Thaonguyen Remix 138
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a12768e185596d73372d360dfaa52067584d220bfaeea3545f0b17f3ad272cd. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/FRX872437538.
Nỗi Đau Xót Xa - Vuhuynh, Thaonguyen Remix 138
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4067fdbdb59aa6b0e2a1f5ff7ca402f83c5bff2c5cb491653d935700952653. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/FRX872437539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5803752a03c240b28533ce71480aac52ce24424e5b5e262438cb090f575707c. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/DGA052479530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e2f3db45c84c5043705c7251755ee59832b9d0007fbadeb473e6f77589960b. 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/DGA052479531.
Tình Đẹp Đến Mấy Cũng Tàn (Ducth Music Remix)
Tình Đẹp Đến Mấy Cũng Tàn (Thanh Huyy Remix)