Lữ Anh Tuấn (born 4 October 1947) stage name Tuấn Ngọc is a Vietnamese singer.VnExpress Tuấn Ngọc trả lời trực tuyến 19 December, 2011 "Sinh năm 1947, Tuấn Ngọc có tên thật là Lã Anh Tuấn, con của ngh
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de9147b854d6e3fd0f9471e70f1430b7e5291649cee7042124473bff4443096. 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/b20313ec-45ca-4dc7-ade0-e5875d550a8d.json and https://artists.proofprofile.net/proofs/artist/b20313ec-45ca-4dc7-ade0-e5875d550a8d.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e7c70024af627aa6fc032763b65aa98746ef10fcdde19444385960b5cb45a03. 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/QM9SX2401381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ab9fe00ce6a924955bf36dfcf6075ba1af327de17549e4a182b632a6f31e60. Chain 2 (Bitcoin): anchored in block 957895 (2026-07-13T18:41:29Z), 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/SGUM72100161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c66f2c71c5bf209967b5de76ca8cb9f345038c6d1775ec8be753444e5b110af. 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/USJ3V1107078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d62eccd8e65813ff80b7ff121eddd9487d3b07874ce4bc90b0ffa756324fba0. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/VNA0F1700919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b82fc8197453a789de80bb203affbc0f907fdcc2a3de336c1c1f7a98bec82d. 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/VNA0F1782333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x254ed9cc3e6270eb43dcde98f54a45f0e04251a8d4c54d19a025d3cb2532061b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SGUM72100096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9702a7c1fa843db654a16fc9d22006a13570f419a3eaf552cd66a9331d8a687. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/SGUM72100102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da5dc59b2e4b5d93cb456449441ea41003dc88f61e0fc29655f68935b9db039. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:10:13Z), 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/QM9SX2205599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x352b2f0dc5bc51bb5c512ec1aca4b701b4e5a35c23e1411c7cb96f32b8ebc14c. 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/VNA0F1735482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c1f9948645701e1e045967d24af278a55abf288b6ca45eed8f080cdf08ac4da. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/USJ3V1087093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad5cf06192ff93584185fcd9965ccb4a361d8065f76f41005a2b8534bcae45b9. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:20:51Z), 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/VNA0F1766034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7252fff8845b98209983061b3196775d3380878582e5a3590bf8117f9059ef. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/VNA0F1735523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1faf2ba467f9bf83e0bb7303f228a7e0586f83254a509ec859a6ea5f459f10. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:43:40Z), 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/VNA0F1735524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a2fc782ad1ef885a006192cfbdafb6e237a0155827334255400dc702f4b3fd7. 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/VNA0F1735525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb823864fb4fe1158c12441e43566b69c4bdad48398feba84df0fe0e1e501ae49. 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/VNA0F1735526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d751b31bd7616ed78252df213ad032742157da839912535c43da6c4e216f0e. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:06:09Z), 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/VNA0F1735527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb300bb375ddcc5f4d42d7347a044bbcda0fac389311535a1db3ec0592f3920b1. 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/VNA0F1735528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed4db3c41163044e634f703f53f16475c653497c2ebd84f2775f03e6b15e7af. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/VNA0F1735529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1273bf2c1e106d70844a0aa0a8d3af155de3f93c64bf6888b9d4c4a3909e8874. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QZGCD1802810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41b72bbb8655f06cfec15109347ba47de6f67e424b8e746e7692d83ecb04929. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:31:32Z), 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/QZGCD1802800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee43290295fa66b39fcd2f9b546f058101b942dcccedd184597e23042c13f31. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZGCD1802811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6363e0329c3384f75f8f7a7a07427c9a7f4e864372eaea1566c471bf3bf76e23. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/QZGCD1802802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045557cc1bf118c6e357ecac41118370cb04753dcd09866577c658e91b2b4f25. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZGCD1802812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8307039827d896f369f3b6bb51aaf0d4c1bcca52581014994ae36576ea429aac. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:57:35Z), 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/QZGCD1802803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x683e38dafd129e5444699c6bc50f609c951a36e8c35b1a2d6fa31036cd20384b. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZGCD1802814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e7a98c2e063ae999aaaf81bdc5fa39ce38cd29e31142053a86b6730d04cc84. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZGCD1802804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463b7b4fabde5d9a658ce947fc0676a04fc7de125b2564ba5ecd7964e9399e68. 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/QZGCD1802805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7902f157acc3ad7dcbb4313e6f85d865c68ad7b06cacd638c61e56e75215ed. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:53:32Z), 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/QZGCD1802815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49813125f5ecf7452b26b4e39b1417c1215711d682f14013146f32625082af67. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:21:42Z), 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/QZGCD1802816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27a9c71731026b966ed73da51e6b264e79c848854ef0a934b4753244c2eb641. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/QZGCD1802807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x216bf29eec23cfbd1dc956546bb582fedad6bc28d627324857cd4dee64da40e8. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZGCD1802817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40580e386aa7e3fdf0e81c9edd941d910e22b68ab539fe2bac8366464a421f2a. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QZGCD1802809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe186a530ac543ea79c8701f1081651c2b85939e24089725a018f57378f5ce4c6. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:15:21Z), 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/VNA0F1717530.
Tuấn Ngọc: Riêng Một Góc Trời (Live in Vietnam)
Nỗi Lòng Người Đi (The Best of Tuấn Ngọc)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1900a211e6a97f1be758ba936373f6d8065334db51798c2731d86919b6101b4. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/VNA0M1813753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4eef61dae81fa9920a3a54df16810fa31b6feb9c1c0add2d79c65f65cc337d. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/VNA0M1814983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x902c64a2bc65dcb4a01a5dee9a8ab7d4f68c08819d172c1632360176b6fbce78. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:22:09Z), 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/VNA0M1814986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4eef61dae81fa9920a3a54df16810fa31b6feb9c1c0add2d79c65f65cc337d. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/VNA0M1814983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63600eb0a83b4caa5b76e4decad6b12e55275586a2d125fa8553ac45fd4c7bd. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QM48F1961103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ecc1af3c90db88822a3afa6e1f42518a21d6360ce88488cbc6b70824b0b0684. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:25:12Z), 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/QM48F1961107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449839a14f5924d96dc6f55b69774c28d60d627bcc48742dfe8f56d2b07a80d6. 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/VNA092003522.
Khúc Thuỵ Du (Liveshow Danh Ca Việt Nam 2017)
Như Một Lời Chia Tay (1995) [Remastered]
Em Còn Nhớ Hay Em Đã Quên (1995) [Remastered]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af376eed3c875cff05c36cc401746e32cb615a6b6d47486fe4a8bd7ea6d3a24. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:37:43Z), 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/QZWFJ2465477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3df519e56db0bb66ddf55f92ee4ca87260e539ef134350d57a63142f4fd3b96. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:10:41Z), 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/VNA2B2501087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b22b0b54af8265899bc18d05aef8067f3527acdb2c6bc42fb1c2099bebf8b7. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/VNA2B2501088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeefa5f3f2cb051fc856ad2ad5669062a57f5a73a1e2d57c9327018f86080120f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/VNA0F1782060.
Liên Khúc Mùa Đông Của Anh, Trên đỉnh mùa đông
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x515c75b2a7b0d96eb622cdfc28c469d654eaac3f5399a482729a5bcdd283b9e5. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/QZGCD1807533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf27cdcec65c3bc882f7d735f40b8e43ff372b668a2906c3a321b5efdfe3c9c. 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/QM48F1657001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50d79fadf231eef57d2ca955a00a7fe66e39b24e7cea82954782b0138a033e8. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QM48F2465101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ecb636602226b13d14d72d0438aa2be42f33bbbe900fb78aa7361c0c048dc6b. 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/QM48F2364504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd5731fd7dda08effb4fa6935029d78aebe8efb8df76ee00d31ef75a0138ab8. 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/QM48F2263401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04835ed0e125da3cf51389a62279a35b542cdb681210049fc55b122f5c7b55d1. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:49:33Z), 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/VNA0F1782059.
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 0x7b59f5a98a77677915fa07ad42aafda14e1bdf1d5b6027f245ebd2c69bfa6c9a. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:02:40Z), 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/QM48F2364705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8330d8ff331b4bb9fe48cd820ecd11bfcab97792bd1ad7edd8167cb547bf31. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/QM48F1961910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c4455c983baa196657eaa8050406b4f6c788e20457e8041feb8b97aab360e0. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/VNA0M1935489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601b4d4e48ab6ab01e9bd5fb8345019602e307adad2ab5b3fa79763f109dad0b. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/VNA0F1782063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f7a2b1554f798c74882fcccc042095b7e10de62c7f744c7532be0b8628a520. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QMBZ91916418.