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 0xe026c28204535cab3676f249404bc534829f187ccd9409e1853591ab1ec27a25. 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/385864e0-7ac9-4610-b038-b2f9c999c655.json and https://artists.proofprofile.net/proofs/artist/385864e0-7ac9-4610-b038-b2f9c999c655.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 0x641b0f63ced58cf3f0719f97e068c953d3dc707730b305c750e62523566a5f30. 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/VNA0M1800968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960865b850a28f72020fa21061ff5a57ec87e0be8edc342a78e9a7202d965729. 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/VNA0M1800986.
Ánh Nắng Của Anh (Chờ Em Đến Ngày Mai Original Soundtrack)
Ánh Nắng Của Anh (From “Chờ Em Đến Ngày Mai” Original Motion Picture Soundtrack)
Em Là Tất Cả (Chờ Em Đến Ngày Mai Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a293e39738f1eca6fbf9381b6b53688307bd6865d10ecc7d8a98b73c1d584e0. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/VNA0M1800974.
Cho Em Den Ngay Mai (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54613fb6521ff679a9ec6e6fa7868f631285ef5e43dd9d9f6f5d2b0a3799a3ab. 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/FR10S2273887.
Vỡ (Siêu Sao Siêu Ngố Original Soundtrack)
Niệm Khúc Cuối (Tháng Năm Rực Rỡ Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeffcb70487d6d00ad60c5988a23d9d62ce9744925d0d2396aac7250190de7ba. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/VNA0M1800961.
Những bài hát hay nhất của gia đình Hoa Dâm Bụt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1db159889cba1c9113af947ffa2d1187a6a6c5920b127795d070b11ec499bf. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/FR10S2273885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af1ecbd740f595c918246c41e02ccdb731c59567de5aa719040e00a48eac270. 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/QMFME2241204.
Trái Đất Đẹp Nhất Khi Có Em (feat. Viruss)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d1de86b03247726ae47852cea2888b374c4e6e98c9080308f3c09b2591ab6c9. 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/VNA0M1907425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317676e341d47c3f811341db21f5f706677e4a5a4eb3633925aae3858c135675. 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/HKJ962005404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262309a95cb8cb13eb6828fe53f2c7c3e5bb7ba21eeb386b2ebb3db4c876e575. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/HKJ962005405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f1eaead200cc8adb48a7b47d1de0affe6341965d5b90a642dcf9ffb3c11a65. 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/HKJ962005406.
Người Ơi Người Ở Đừng Về (Acoustic Version)
Người Ơi Người Ở Đừng Về - Acoustic Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa228b21b0a236d80b5b008a90d21f65e2d3960a81ae19a932a52e4d1d3b120. 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/VNA0R2000217.
Trái Đất Đẹp Nhất Khi Có Em (feat. Viruss) [Beat]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x117c723ca87273222e942dc9e15b355bdd72cf8ba99065de17a2572b98e904a1. 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/QZN882118598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52bd9b99b2ffd70c4d252bca68dbcd7cdb89bca531aeacfc7a90015bf82651e3. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/QZN882118599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5b9422b2c1952cb36946c608b65b77ab0c836953eb8df33bba78f7fea27bc9. 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/DGA072203212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb66ca8bc8df8f2323424e274ff789514e08bec3a028b980d30283fb7a59d0fc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/VNA0R2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a0bd578d52b9d82c33eeb4ab39dca8194e98eabef41551af681fb84465be1f1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/VNA0R2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1dceedd3300e78ae0e37a109682436d993ed19d570d119a60bd17aa9d8d8401. 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/VNA0R2300137.
Một Bước Yêu Vạn Dặm Đau (feat. Quân A.P & Đức Phúc)
2 Vạn Dặm Dưới Đáy Biển (Hồi 3 Sau Cơn Mưa Sẽ Có Cầu Vồng) [Biển Của Hy Vọng] [Tập 15]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc17b473d2faed242251c8d88b7c1a0c6d45f6d2898e68e56bdfbcf78e9e593aa. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/VNA0M1930171.
Biết Ơn Đời, Đời Sẽ Thương Ta (Hồi 3 Sau Cơn Mưa Sẽ Có Cầu Vồng) [Biển Của Hy Vọng] [Tập 16]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d87beff709992f8a17c302b2f3175ad9aeabf2ffbb40dcecc1b7c1e2a618eaa. 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/VNA0M1930257.
Cuộc Sống Em Ổn Không (feat. Văn Mai Hương & Đức Phúc)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e8f7bf610a8d31a344737cd5d4d3748efed49c469da386bc6bc802f85c17f8. 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/VNA0M1930260.
Đi Để Trở Về (Biển Của Hy Vọng 2022) [feat. Đức Phúc & Quân A.P]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925a89a598cc7319693595c07e3ac76c696baae8b4a753d262e2caed00f2e125. 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/VNA0M1929538.
Thế Là Tết (Biển Của Hy Vọng 2022) [feat. Đức Phúc, Lâm Bảo Ngọc, Tiên Cookie, Hòa Minzy, Isaac & Quân A.P]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522361dafd18c9d653e02cef3f96cdce9f84da20435264aa1845961cfcb51605. 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/VNA0M1929539.
Thất Tình (Biển Của Hy Vọng 2022) [feat. Đức Phúc]
Một Chiều Ngược Gió (Hồi 2 Cù Lao Mái Nhà) [Biển Của Hy Vọng] [Tập 12]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8db4f011251ce79be78043739ed4064e4552f392b0431bbb15196aef4878456. 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/VNA0M1930007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d92bed36c956b4f64ef0f6a935b39626a81f67d65d7d135f0a34e9b89fb8627. 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/VNA0R2001045.
Liên Khúc: Câu Chuyện Đầu Năm - Cánh Thiệp Đầu Xuân
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd051a941d8890a72cb75f77e350dcf301f650ad37c53010d78b42f475ca25bff. 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/FRX282113937.
I'M THINKING ABOUT YOU (feat. RHYDER, WEAN, Đức Phúc, Hùng Huỳnh & tlinh)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3294537cdcd486bb4912d0245812b902b10caab6f221c196da9d46bc0173c39e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/US38Y2419537.
Trạm 1: Xuân Hạ Thu Đông, rồi lại Xuân 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc4244e08d97853584bee1adb5d6466bffb2783c4c46e306ea8ce94f3e1e9ca. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/VNA0R2000813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700a7190893401fde499c3996e1be0199eac259a8304f9188aab004c1b928664. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/VNA0R2000814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a141bd7edb6ce148a38a38c36d5a41062d0877b3599dfb05359aa6916239e3. 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/VNA0R2000817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535e72eb14831acea2c31cd5952c6bba7f09bd04caa20e79a8e4c7d7aca9f20e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/VNA0R2000823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20f9effd1e4aaadc79ccbfa877a6a8a5d0bd807a562d5ea9559366522b2190c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/US38Y2504849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb073e1b56ec3bd369f2a009cbb943b62da8c3adfc999d73950bfba400af2c4b1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/US38Y2504863.