Krucipüsk is a Czech metal band founded in 1991 in the city of Liberec. Its only permanent member is vocalist Tomáš Hajíček. As of 2023, the band has released twelve studio albums and a live DVD. His
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 0xea1eab4196dc5e331d91e08a058d1d274a37e0a0a28f7bf2c014502d4a3277e1. 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/2cfc8ca9-1699-4ea8-b9ed-f48af29e0ae6.json and https://artists.proofprofile.net/proofs/artist/2cfc8ca9-1699-4ea8-b9ed-f48af29e0ae6.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 0xc026efa209f53ff3b9a688d3ff97e349de1938eb9d072f7ea31e56c813f39a93. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/CZA231300446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c79c8762323768041310b36665e526a7a3ca9a4dedb17e84dd8d47a297450ab. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:02:28Z), 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/CZA231300449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a3915656e5b545e314684c72225e8e5790f7336a9d77b634bfdcb3f742f7cd. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/CZA239600022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e07a6197ac3fab9dd01efc2c43152a701c8928a75987bb032ad6c99f5481dc7. 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/CZA239600024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25bfb69970c225bd03edccaf5d33a53ff277a212162b5e00d39bd2ec6dbb6c7. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:13:15Z), 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/CZA239600026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5606956bc1c4a3129a5cac0f2d97cc212a5ff46dc4c28034fdef0910df51ddbc. 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/CZA239600031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2fb40c06796205d1fd0dd4cbeb47e7712afdd47e5ca79c51879598c8f71c843. 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/CZA239600032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3ca442a79840ba22184386920582ab41757f0c1220504b3ecce8560447a91c. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/USCGH2022364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7722d0266aa8ad0cce8117fb60cee7d4483fde9ed59ba08ca1423f012af263b3. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/USCGH2022370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc4ca6100f995a69ff35d0baad0b68260d765dbfefcffe81f1ad416f8d2959c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:33:06Z), 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/CZA230400074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9af45efdb58fabc808add9295de25e72615f714c4c7458f3e7e069049d916aa. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/CZA230400078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22732dff3f58ca7748a7bd2bbc64ebadc77bd5d0c3a8beb728123de2b9bcc472. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CZA230400079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19d0e72717b1b4b8a22c23b760858d869288a215dcb0cf1daa7b9e0552c8ee1. 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/CZA230400081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f10e605d2c5485d9229bf3777433b6762fcf1f6dbc30fc4b8940226e75c8552. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/USHM91768825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96de55d60b3ddcfe96840e86a4d9bbe8b5f61bb2c035c6495f5ae8647796bdc8. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USHM91762395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2df8c8c6dd65deeb6a65e468021626087957cf18a2710c0eae002e310b6147. 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/USHM91762398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d7a8b26ee3b1af3b66ccefc3bbb23da87ad19a0c2b1b884e3dae597678a308. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/USHM91762399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22c4ee38eb637e35deb00482ed41784062346f38147fe66574a60bd0152a0c1. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USHM91762401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962cdb01dffb638180418f4066e5de112d219a9f0fb385818ca4237e83c2a13a. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/USHM91769866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0986d75790335bb1182cdaea82cd4d883f27c28bbf07ff97e16f57dbf003a32a. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:55:29Z), 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/USHM91769870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088adbce8fd3d575432245d4f026e2ceacc24ef9d8888ccdc7e001a97296c20c. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/USHM91769874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2097ffbd64bf77a5551b92677978a284eba1f21ca0b5332ce2738fc84a9872. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/CZF711500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3930dd51a5cf6f312146f2bd6da8e6b30871dcd74b466203782a31789c4965. 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/CZQ451700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4a87d581b0ab0f82a893e34430387478fb1260bccd399828563aa30be3041f. 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/CZQ451700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfcf673fbabf56ef13fe367e8b7896709880cc4f2d5db658d9eda0ab62ce1f49. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/CZQ451700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bcc8c3ac9d15ac98f77f1c15b0f72029b4b77b7736e61c9081e55e710392255. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CZQ451900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e4aa861659073e208ac3f2764f84e11cdad3caff19f30059ab8cd542527e6d. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:36:27Z), 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/CZQ451900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc278188b3070f7b4c5729f97d3fe1159bda0196a25d16964cddbbd741ce0c330. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T13:53:30Z), 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/CZQ451900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63590077a34451136e56313c31e2d3006228f2bea3a90c3d026a47ce74ae89e. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:03:57Z), 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/CZQ451900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f3924d8a9c047cc7cdb6a2bd82b15cdaef4d0b6abca598d12fb4e64f3a1cdc. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/CZQ452100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0696563a71eedb61025ddb1a735d0637cfb06ed7c48d0e573164c20481baed. 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/CZQ452300001.