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 0xd1dbe6eb1e2c1e1b6035068932be1c16ccdba7688362c3bbc2950cd74f9530de. 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/b0410b88-0c0d-4b7a-b25d-de3494f3e10c.json and https://artists.proofprofile.net/proofs/artist/b0410b88-0c0d-4b7a-b25d-de3494f3e10c.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 0xdca6e0242d9a8f2a8118126cbe812e5097e784c27247aba12f39d5b921d922ae. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/HKA411800137.
Những Bài Hát Hay Nhất Của Minh Vương M4U
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf89b8ad583b2a4775d4cf85fbdede71d9f8ecb4a1d4ec1e7fa5ccb51493b22dd. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:28:45Z), 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/HKA411800231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a76d4e99a365fcb5ae0218557d91a9349638372ae83946b09843ec487e25e0f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/HKA411800150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceae238de82df2dd556fbd05e0e9d85ddb3ec1853da694a8d70680da7c28d2ec. 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/HKA411800233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8855cf56aacc987b64cef40c58ecb8ab19423eaba23d527a5e2be3613142f604. 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/QMFME2236816.
Sẽ Mãi Một Tình Yêu (Hương Vị Tình Thân OST)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x041db82fe67631858c6bbe295a0c9d0c7ee57c53ca5ee6e9687a9723db4e25fa. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QMDA62274826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef5220fbab9595f6ccf6909d23fbf36f708e35eb46cf88405fd267f942b3e311. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QM7282338445.
Thương Người Chẳng Chịu Thương Em (Cover)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12977fb06a685cdd2d70e0f9e1b033fd02a12d8f467617c8f87971e2a216bfde. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/DGA0Q2314461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba18e3406cf1cc60963608e4e7ae9e4efe6f68f062574618cad0f699813d0c9. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:18:44Z), 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/HKA411800146.
Mashup Em Sẽ Là Cô Dâu, Đơn Giản Anh Yêu Em (Hiếu Béo X Phong Con Remix,)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c64e98852707a470935a86358f86f27bded532133ef98fbb5f2bbf6c22bc1a3. 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/DGA0L2409295.
Rất Lâu Rồi Mới Khóc (feat. Tuấn Phương) [Lofi Mix Beat]
Rất Lâu Rồi Mới Khóc (feat. Tuấn Phương) [Lofi Mix]
Dẫu Tan Thành Khói (Anh Vẫn Yêu Em) [Domino Remix]
Dẫu Tan Thành Khói (Anh Vẫn Yêu Em) [Trang Moon Remix]
Dẫu Tan Thành Khói (Anh Vẫn Yêu Em) [VUX Lofi]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0718fb0e50537eee996ffa268f9d0a166ffd334c189fbc1677f949efd512144. 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/US38Y2522178.
Dẫu Tan Thành Khói (Anh Vẫn Yêu Em) [PT Remix]
Dẫu Tan Thành Khói (Anh Vẫn Yêu Em) [BC Remix]
Dẫu Tan Thành Khói (Anh Vẫn Yêu Em) [EDM]
Dẫu Tan Thành Khói (Anh Vẫn Yêu Em) - EDM
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75dc7a191e678fa10ee0dcdfbf1e17c607c9a6b063aa3aeb717c53cc89c355ef. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/US38Y2522640.
Dẫu Tan Thành Khói (Anh Vẫn Yêu Em) [ACV Remix]
Dẫu Tan Thành Khói (Beat) [ThahTrung Remix]
Dẫu Tan Thành Khói (Beat) [Beo Lofi Mix]
Rất Lâu Rồi Mới Khóc (feat. Tuấn Phương) [AnhVu Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b3732f87cd86788d2e249718974a15768f355bc36fffe14e42252efb8f2e63. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/FRX282559041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb399f8abcac669d8b5bdae1fe6a84defa7d80b035015de4785a4e82d1749dba5. Chain 2 (Bitcoin): anchored in block 958602 (2026-07-18T19:28:16Z), 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/FRX452584970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504c23e656f9e80f248d148b40f8b298f62ac5f49e73403951234a0dcd360891. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:09:06Z), 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/FRX762543158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x366ef8328dec3929e555718be68a00144688623293280c47f3b9e9c300596763. 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/FRX762597361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8763913a15100c4cbaa2a3fb65bd5122f05000c47a8e35671ec5f513660d7465. 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/QZYHM2509666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ba71fd7fbe225963b3e43c6ac5aa531947b96b4417777fbf850bdf9e007e89. 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/QZYHM2509698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f9bab63b5f08facb56f77618eb913b67802395ebf268469450717f31f094e5. 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/UK6822516478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a179d33ce2db545689909d4c395c1c774e2a9a186503b8ad7adfe7b1427651. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/UK6822516453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5fc786775636c83889f82ecd107c02c25c18622b81c9794179a9409aca9de2a. 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/FR2X42511408.