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 0x292c9cc0cab5e072d6402cc816a351c51e93f88c69fafde6f19f455f4dda72f0. 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/2328b296-f460-433e-a802-e16cd05cb0e7.json and https://artists.proofprofile.net/proofs/artist/2328b296-f460-433e-a802-e16cd05cb0e7.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 0x33eb675274aa0e396bd6aeb82155a11cfc052798ba3ad4080574fb6ee7bb2d56. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/QZGCD1802016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee076fe95a909bdbbf1d92abbdd9efd427cbe4f59933495a51c805bf350e1e72. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZGCD1802017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ab3e8a49f6d62db825315494723bbd6547b4ced7d29f45d3c71ea3e0572d13. 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/QZGCD1802022.
Top Hits Vol. 1 (Đừng Nói Lời Cay Đắng - Chỉ Còn Lại Dòng Sông)
Tình Yêu & Kỷ Niệm 3 (Bé Yêu - Tình Khúc Lam Phương 1)
Tình Yêu & Kỷ Niệm 9 (Người Tình Sài Gòn)
Tiếng Chuông Khuya (Gia Huy in Thailand)
Hộp Đặc Biệt 2 (Tiếng Chuông Huyền Diệu)
Tình Yêu & Kỷ Niệm 8 (Xin Cám Ơn Tình Yêu)
Phi Trường Ly Biệt - Tình Khúc Minh Khang (Instrumental)
Tình Yêu & Kỷ Niệm 11 (Những Ngày Xưa Thân Ái)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eab0bee47518a0d99099c66ccd6e155b31cbcabf77853e61c6c44228e43aba3. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/QZN882280229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec56ac5d06d97cb67fbc14eed0776a4799c76e20ded34c7d0320ab6d4695d59. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/FR10S2307470.
Em Vội Quên Những Tháng Năm Speedup Remix - Em Vội Quên Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef72a0bbc441244bffb64ad4c56b8c68c4ea809041d73b2cab61c0cf070229f. 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/QM4TX2415906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b36a093328cf392fc86c40a131c0c4d3a635cf1a7c660da98a74a5ae989ad9. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZYHM2410255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x113e7d75a768ba45e5674a2c440f39b7935a2bbde77a828c54705a80453e6efd. 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/QZYHM2410261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6729fab94fbef325fe1f9d042c4d0b76e193bb4044f1aebd05c7829706c189e2. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/QZYHM2414673.
Nhân Sinh Quán (Cover by Gia Huy, Bé Lê Duy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ec0b7022f30fc3a4cde46958c5e07a773267d8346e39114e7218af39b9d7f3. 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/DGA0S2491769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc650e396f0dbd2f18c793077760d3fe19694da193199b9fa7f9d07bef3b77be5. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/QM6P42551850.
Đổi Tình Đổi Áo (feat. H2O Vina & TOPKN)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17942b3ffb055ebe77f493754999d352faf2e2cb5931c34d52a0e10a4d0285fb. 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/QM6P42506986.
Đổi Tình Đổi Áo (QKhanh x Đông x Thazh Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b733feb5e52a6b49df4d1377b42c9c6f26c4a4df058d891fb849a32e2f9478. 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/QMFME2523108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee09babfa0a64175d3a2251324bd41559aeccf7de5eae8e90b5be160b58a92b. 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/QZGCD1806761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894bc012a224f9b1fe0926d5ec0b3eae445e1ed826ba53879e66db8477b4a9a8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZGCD1804923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4329e9d18088e513be87d47d5b889789da007637913b2cab58d1f6930727ea. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/QZGCD1807464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78e80fa62b2de4232203ac7a879308d55bb4c4f4969863164e683925211f2d3. 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/QZGCD1802488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa024d10c369946de3648b45ceb4f5add7d97d1b37f5a6eed7395492b4fa86645. 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/QZGCD1807461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1327895346ecfa6f11b3bc68ed8b00ed293103c1eb51f0d760a90f774b38ae6e. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/QZGCD1807426.