Lu, Lü, or LU may refer to: Arts and entertainment Lu (duo), a Mexican band Lu (album) Character from Mike, Lu & Og Lupe Fiasco or Lu (born 1982), American musician Lu Watters (1911-1989), Ameri
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 0x6455bc83a8e3be24e99c2a43644ebeb018a5fd41e4b22be17088af7829b3960d. 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/6ee07114-1869-44e5-8cd2-04a62333f15c.json and https://artists.proofprofile.net/proofs/artist/6ee07114-1869-44e5-8cd2-04a62333f15c.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 0x3aaac3c4c86b5f0557d388fbdfae72d2c176bde3ddc098d082c0b2788e327dc8. 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/QZDA42105490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5fab4513a2ecea4e43461ec65f63edc7c78754340e7d332652f4322c9cea884. 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/QZHN32147920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94243beee2635e72c83bd6a00e894afccdcb20fb4ca08b6ea4d36dcace8015a2. 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/USUYG1389970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf2405abc53928bb2a261efb04bbec03f117bc014194a9b3579325607171065. 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/USUYG1389971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4456bfaf0e436f8d9d32fcb1edea5d718e326c1f81d33e96eb953e5677439f6. 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/QZNWX2127818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6371c00ffd89954ccb1dd90d8f517de36f8071c782a9ce7c854cd64c6de6a5. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZNWZ2151987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77406e11f87a2dfcfbb7f6fe2a473fd3751eb898372601cb4d0766a38389a014. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZHNC2215049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d875c610bb2701b9c4407afa835a841ef022ef62e18c2f587a3d663bd10a842. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QZMEM2238997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb161e0be517991ed388b163d2144a008bdb67d195f76fc99c991193a511232b2. 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/QZK6L2362637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f336ca696566944ae705306214313b221ecdde522591896ca1ed95d461f432. 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/USUYG1492757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ba839d4d2f2068e157145e0e2fd90e6fbe9dcd13b3016a73b11399592255b6. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/USUYG1504376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2e3c29dca4c59d53b786447af7f32a09cd0d62a7c4e2cb751db9a19a00d535. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZHN92360392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3661a064299856791387055811c1db28fbcf5aa68543a29a73a86ccfc3e3091. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/USUYG1504377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d57d1c2d1b93c1f0b010f167bf3c4c825f80d0e29df23bbd219f787e79b5e3. 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/USUYG1504378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d24e30d4952730ab9eb3fdc436b4f6bf836ae2ef5a82220e7d3540eb2c0d4e. 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/USUYG1504379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a5e165e2ff210eaf467c8b67b2412c308695feaaf67ee3de371c05536d9e23. 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/USUYG1499049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923acf13bd57fea95a11cfde055aa613ba63a524057e9cd064b3b3ccace36565. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/USUYG1504382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8010161278da88289c67355db8a8eb5c528edc50ea7230893b02312710ce18. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/USUYG1540995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b3bbf6422e481b6ab21a6096754810b0cfa4b5fb854e245df155217c632543. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/USUYG1570164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad765880a96ab456c64356bd51374e8661ca46fe5c05310b2fb7575e5645538a. 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/USUYG1580487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc238ff2359feca8f05677e19726f471569d8d06cbf22557077e24d63d2109dc6. 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/USUYG1580488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f6e5a494838b2c7bd56bcb379b69e772dc286b88b543f7ed4ca3a6aefde59b. 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/USUYG1580489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe66b881d1fd34efaf0fd020361f012209a9f0368f39985c9f06a919b254fc631. 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/USUYG1564648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4351eb11c3aba35bd175abea4b581abc24eff72e7613ca8522db226c6206c19c. 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/USUYG1534331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57328f4109f4b634aa23a19765f77b9429f8fa2f2fae7f046f508606bf6115d. 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/USUYG1580491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b3bbf6422e481b6ab21a6096754810b0cfa4b5fb854e245df155217c632543. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/USUYG1570164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa13cb637e54d84c72e7dcd993601c3408511f4e365eae7cf388203f5ba3058c7. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/USUYG1580492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe385b2126d896dd8e6747bb769baa34a2fcf06b8394847ae4c0274de7a60087c. 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/QZNWX2355323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc95be87e4c61e4c618081804446de31962f6d75dae453eabdd33bfd44d0e78f. 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/TCAFN2158559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9656912f3bb09315712e9546f0bc3ed907584f8409bebed76dfec0c0086677. 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/USUYG1536584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9f653f3b699754b68105d625419cd7536b514625b7686f7575aca20c61a2a7. 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/TCAGW2392912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dfaba4e0b3399fdc6729f06403b17936ab964a3420ef549f53b2c3ac35328c2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USUYG1463904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf70d72f39c8144e93987d7d4531e9e8338068eea7d062d83f9a13e03c6f891a. 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/USUYG1463905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19017b5802f4807cb3cad27f1bbd9ffa44ac18a0d9a782888ff47e2e2a2f2b5b. 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/USUYG1448233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfccfd7c09627aa8066dbef61698f53f67484da790e699c292b24a3e5261b3407. 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/USUYG1436411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460cdbce79c030fce78de59c9ee1487d354b6c2a9b283f4441a497d4bb8344cc. 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/TCAGA2208693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0046e2be27b56eb4b3b6e6fd32a3e0e65ee6d119532ea15654f348c898fc5643. 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/USUYG1541723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47165aea4b4d0657ab2202a50bd0a752d6384ae58c3f7759ac643e4d139adf63. 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/USUYG1432390.