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 0x3f4f111f9257c479423cc94e53261916517d33093ab96edb4182634fda29fe80. 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/e6deb58b-8a85-467d-a605-473787d5ebc1.json and https://artists.proofprofile.net/proofs/artist/e6deb58b-8a85-467d-a605-473787d5ebc1.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 0x5bbb0183dda3b076a0fcee5a4ca736c9b3056c24989bcc3e5247842d0c7d4776. 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/USCGJ1083811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e7eeebb72b8c60c3df147b04750efe07f5b1e0588177d44717ab38000d5f74. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/USCGJ1083812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb716308f1c7d5803f1c230b9ab960c443e58332357157db2208715de8416144d. 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/USCGJ1083816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee3767a33636133f69f79649f85dd918bb336f7434735b816ffe75e2a307b6d. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USCGJ1083817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2d3017bbd6a1ff01a10bcd5c841a5d7e352669ef810a32e85faf8a7f48219e. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QMDA72269480.
Dạ Khúc Dương Cầm (Chiều Nay Không Có Em)
Dạ Khúc Dương Cầm ( Chiều Nay Không Có Em)
Ngày Mai Không Còn Nhớ Dương (Dương K Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead423499658ed077815a2972a60dbcd49afa8e566ab38e6652f6e92d0583d73. 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/QMFME2240961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd99aeba668cc68662abdfe5c9b12558542acdf1b45bdd9e1578149acd1df6a. 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/QZNWT2052860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f27a04691a05a6046060ad23c001a30a037eaa6d1903b86133eb3e613253c6. 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/QZNWT2052861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5ba60806147eaa48537bf1a5654a1027d43282306ad60e79db84b9c696d3c8. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZNWT2052862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8244c637fd6d4937ab990dfd1a0439dfb6d902491af18175c22b5da5f7eba4. 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/QZNWT2052864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61acf2714b676f211e206a5a8dd0b2ff97aeb5f4fb68304cc3446d1a58acc202. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZNWT2052865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e97c6cf30921f980166a1791a82aa98c11d7ebd0658749e908399f675c9e62. 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/QZNWT2052866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff408557bb3a2fe94749c18a4b078b793c90c405827c05c5fd8cb23bd29766b. 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/QZNWT2052868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb178158d998032333f2aa2bebbb32fc8c4fa3da0b9717d4ea3049244b0aced8. 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/QZNWV2029730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d71b1ef62c3120fd9c5b01a0bbdea9072b0e0fae9700088c92704a4961f1d77. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZNWV2029732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef12d350e85a8216a941d6cfca975ec88a19eb87391debcc4badeacd59d8fd5. 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/QZNWV2029735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c7bef4fa1d37a16e7da2ef88c782c51924f208dec816fddb9632a12b745855. 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/QZNWV2029736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae275f370019a6806397ad609c0a7173164fffaf186fe92688ebb28a72b8d491. 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/VNA092403306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ffd8c7d1d1a1d9aa9472cd190b4bea9db0610c400425c8b944e82982fd897fe. 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/VNA092403307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b7b4dab3c7062ac16a101947cd6c64b8377646471280a36393c47571629ee6. 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/VNA092403308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237cb162c5b37f212f6d7864711cc1fbafdad4e40aa5aafb88268e0105393212. 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/VNA092403309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf86a4de2fdb558282699fad1552a4e5e395dc7e7e29e34c6b6264f200bd3c199. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/VNA092403310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b044bbe0be329986f9a2a6cda355d63628c9655ddcd16e9d4cf6e6b68bf61d1. 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/TCAJE2562344.
Tìm em trong vô tận tháng năm buồn (Liveshow "Về Nhà Về Giữa Thiên Nhiên")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10320574c102bf4ef67f98a1ed6c653cf4f447a10c8b5d19d0c84ce0d5fe14e2. 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/SGUM72400391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea835e1566baf592ec4ee24c5a8a6e2df6365654c39e614e621ff2ab999d686. 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/SGUM72400397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75678a0bb80d445240b7ecccefe66cf864fef74611cd35a819ab845efae798cc. 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/VNA0R2400270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65025abf50216bcedda3fe587d5059838ff219c715e78a7a15c3fc8b0415c4d0. 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/VNA0F1729613.