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 0x85c4a611f28e2f0bb72b03e87c5291ab836a3e39f3771122c91280240a481722. 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/914edc84-f017-4c21-8051-a97762a65e7a.json and https://artists.proofprofile.net/proofs/artist/914edc84-f017-4c21-8051-a97762a65e7a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Trương Chi Mỵ Nương (Những Tình Khúc Hoài An)
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 0x6e2d069d4d354582b7e3ae71148e12b789de89a1d89c6f5e51ab37ab2f0ccfdc. 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/USJ3V1128780.
Tuyển Tập Các Bài Hát Hay Nhất Của Đan Trường Phần 2
Tuyen Tap Cac Bai Hat Hay Nhat Cua Dan Truong P2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af6dbfea1944a97cefdef6e7ef76daca8108728a8b44f319492e21f53b1aa7b. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/VNR011022697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a06e19de5be810efc18bb777d408b0685771051a9cf283684422d1cd21e9691. 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/VNR011022701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23daebecabb8445e18bbb111b1f6d923a0b945ebb6d644de8fc4fefb49fb1963. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/VNR011022776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150109baef851bbfa3d98554c3d6678e684bee8f9cd08f46abf7c853b0f4741f. 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/VNR011022459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe3fc79e37e0755672678d846b6d7a5a2e3da0588e87f66363468be6c8ee779. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/VNR011022462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a19a0f5bd57d2d8059b764e9e5a17321c662b22ae01fb72b2864c5e34447876. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/VNR011022384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa908d5c6e4daaa9b08781ae207de30f35cd945167a54d95f650ccf2a8ce323e5. 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/VNR011022386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26da92eb9ede7df451a47abb07f497732fc9db34b23c189d8ff15e30008517a3. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/VNR011022629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140b76939d715c0b35fc768c4ea137bcd87d4ec08620c452e61c6ab8b8da4032. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/VNR011022708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a23c6c2dcd82b7ca691915c43f97a2bc670fe0b2ca62770f82d24cb4710414d. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/VNR011022540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e37c96065a516916b81be9b791eb8b201b684b68754d8b2a93e1ed261215e8. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/VNR011022549.
Tuyển Tập Các Bài Hát Hay Nhất Của Đan Trường
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd24f2af0d712a2e1a333db713a8dabc1e57418fbd7b9df96dc2159dd450eb88. 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/VNR011022820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752354dec435d5b3f11a1244cfad70644359194813770da044189f49ecbbadf2. 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/VNR011022607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4263a5c9d7649710c443dc1194a86dcc4f2bbb7c5107bdd57127bc614df7ed. 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/VNR011022666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe63c105886dc7395a62914d591bf901d04bf3dd134d2311184f59da0903285f4. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/VNR011022623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4d34f0112c3a1f13518e633bb4748b160446a073fb76dce05a097461f2d82a. 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/VNR011022486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07653aa4ca91076af2b651b0dd138bfd50249576d561cd33de5e6a162729a24. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/VNR011022723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6be2e0bc3d17a6f2b6cead1a5233277df368a18c46526f5aae8326f8d3a3e06. 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/VNR011022648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed167cda397a4277a592b0f283ce6846c5958f86cd1e7cea3c33eb688809eb87. Chain 2 (Bitcoin): anchored in block 957839 (2026-07-13T10:06:30Z), 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/VNR011022828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d14225fc9189c2515d65e8e4b52b9e4c09f184df9d944e3bdeb9cb0f23e3c5f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/VNR011022829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe665b704f96e49710ec3e996887e6dc07fbb87bcf6c95c1dfdce93e955148942. 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/VNR011022831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28bcdecfa843eb40c2ac034d04a0b80d3fbb684a9323b2b73310dbc1ab6e42b2. 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/VNR011022834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918265196096a33535195c2c6aad85c9b723b5817eb5619f1222348c9085e0d0. 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/VNR011022551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc501c0ff4314009accc9ea0ebb26e9623376eee461cfb147ec48ae5f83927b. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/VNA0M1806281.
Những Bông Hoa Việt Nam (Live Show Bán Kết Hoa Hậu Việt Nam 2000)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a8cc00a956e4664b485602f92d884e4cb6e62be2da7d6279216f79f7d32555b. 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/VNA0M1838334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed1fc3d3e5cf36d4cf7c7c278423802414abd8d823028d2c346506b1efbd868. 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/VNR011053534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3962eb8a6bc4883044502c3b1a10b384397b1edbe5c287be3282c11180336115. 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/VNR011053505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802a1d19552904824b86a6a9516e9bb439e2c19d83651cc9364d1dc05219dcbc. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/VNR011054270.
Đi Về Nơi Xa (Cha Ma Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9613fa72bc20511570be0575929173553e4abf2fddb3a470477430f0a6721a64. 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/VNR011080619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4baad29ed306caa1480a05201d386912b9b554dabd6bd4d72ff02aef9835510. 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/VNR011128867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3eeeeb8ad2944633427b7e8ba903b20c64016cbaf68014a3efef8e11aad0872. 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/VNR011129599.
LK Vầng Trăng Đêm Trôi - Tâm Hồn Xao Động
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b4dd26b689dea31cdf8034c1706967882f5110e34e28d5a7c3ddf653870cda8. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T09:08:06Z), 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/VNR011130313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78d3d84d5377715a19b2efba35e959d5052d2ea9928484a3f7dce62001f8378. 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/VNR011053378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a21f84ae20343fd6092647988c87da470280ba4d4c9fb724e612bb9b82eeed. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/USJ3V1128398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e7bdd587869ee194e7ab08743b491c588e940b3162904b5392f2283ca95f5c. 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/VNR011053162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1aa649c37197d5e5ad5766081d8cd8b170c0a1163bb544eb6c8d2bf52fe2a57. 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/VNR011053164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8fa4586fb3d9ab8d95cf75495e64a562106e6328900b0e13dbe3920386cbcc. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/VNR011054197.