Varius Manx are a Polish pop group, formed in Łódź in 1989 by composer Robert Janson. The name is a variation on the English word "various" plus Manx, the variety of cat. The band have sold more than
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 0xfe34ce33307299a30659944fdb40e1beb72ddc0e383e4953f5a74d1a819cdd01. 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/99431d88-aab4-490c-bab3-13b6dfbb7045.json and https://artists.proofprofile.net/proofs/artist/99431d88-aab4-490c-bab3-13b6dfbb7045.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 0xf2241ba2e7eb9822effab87b123245d38f6de3cfefe2f7366a4738dda16b10b4. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/PLB390800153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae195ebb21502e5a59f1de2a13a23bcde838f22b8cfcf0996f026412a15809ea. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/PLA690100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2be3662c1dd276ed5698af8445b29e46662a8dd69a59ff5dd48f9df24a13de4. 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/PLA690100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9bd21cb66f19d2d40ab361a83249a699ddac6b6c925b47d3bd9acabc7f216ce. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/PLA690100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f5f203552f0657e6d261ed90e2a23d275e8ce55ea72333532cefafa2debbb06. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/PLA690100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc0e5f259040a5c2154573ef92388ba25e5369ed6eb31c8043a9d5158242247. 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/PLA690100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f42c2aa1a620737450971b1cd5215e2a81637fc2cee78bdd5c3324fb60a3308. 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/PLA690200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc389f0fb34700e042bb0a7e7bcc644328f9755d3dd98e09930a3a2edeb3bf72b. 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/PLA690200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b9386c60afcf9a81d109207dfa5a1f25b1b65206fd00de999daedaa5968063. 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/PLA690200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f9340983f742d93c4c63f904653dec406c5794108598fc935ba22059428e42. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/PLA690200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424296b49300966a6593cd0ed1f5ebac627e0c9ea29bd0abe283a9a0c91f10e9. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/PLC100700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3fb7cc0db238f92fdecfbd42783d84950eb0682fdf1b457c0cd7e46da75e12. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/PLC100700016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e417502b283cff201c08b999c6cb077f6eb0af77fe57ce3daef2cc8ad8ac6d. 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/PLC100700017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf30f5d8ac3b12764689d0c91dc313167bcbf443297132900eefd59e27c952f. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/PLC100700024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b34b767424f891e0856a6d506c8c26ce7945f5774bbcc3babf8e2b93d45442b. 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/PLA281300137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0612cfcc6d488d329de6cbfae08fc52c78afc75df563ee5bbb91934e32ee369d. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/PLA391608501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e96a901bf96700c049d4253f9628c7044fd1a4c563b29cb83c2a1e9cefb493c. 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/PLA391608502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00af1252fee2880f648c32a36fec85426fa5c15d616f66d2c5c661df204bfe5a. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/PLA391608505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821d2fe9c3303e6e081b95a9b851dafa89f44a057f928addae3e9f4c3a122175. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/PLA391608507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835abb3cebc9f51c36b436e47ac9938346264b93af4b2d6571a9d4769b141841. 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/PLA391608509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbddb917b4bdebdef53647b1a8352ac1451865142d7b38d8cbcf73d2172e33114. 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/PLA391608512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b87681143e58830e3003db6f61fe9eb997dc1f293614853b5e79bbaf0e16022. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/PLA391608513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74996aa9b8e2d1c6beb9d8ec5c2062c73b3ec72646f06142195148fdcdd29c2d. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/PLA391607101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7759eca4dac203fea3d8fa5f1e7b0cbf7e443eb7aa59340097ecfded85b6e3eb. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/PLA391607102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa12c502138a3f6966e8ecc345ff1e67efb8ab558566ffc02c345c181110b4884. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/PLA391608510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f3e9b3b29d8442e9d8bdaa9574f9eedee5b176dd967fc3c133008503890b63. 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/PLA391607104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e96a901bf96700c049d4253f9628c7044fd1a4c563b29cb83c2a1e9cefb493c. 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/PLA391608502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b87681143e58830e3003db6f61fe9eb997dc1f293614853b5e79bbaf0e16022. 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/PLA391608513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc102dd8fc3b687a791237e037be394e159e40cd9d648e2f5b1c379b01c39ca2d. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/PLA391607208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503d7727f3fc23ccdf400af02b6a4f4575a1c0ecfc6c8f9c16e69008bd08040b. 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/PLF301600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04b47a883e3bfee29a6f25907000f74bba3c5af4842bb273334cb072df7a4b4. 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/PLA391608506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ce7500f495efc8f6da6c2733c3ae1ddaaed15693f135e2882513486b8f5fce. 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/PLA391607112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac23c702e682b23eadc0614a0beeec690a6190fc9c9730d776f33ffa88bc7ad4. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/PLF301700601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90673cfbf4b50db000b36a884c719f4bd68f65467f3980a11ed933e290f33169. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/PLF302000841.