Mirosław Maciej Maleńczuk (August 14, 1961) is a Polish vocalist, guitarist, poet, former leader of music groups Püdelsi and Homo Twist, also known as „bard Krakowa” (bard of Kraków). He performed as
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 0x168f7efca7a84850bee0c4cf3fd2a4eba665f92473f708e24ed753847f9d655c. 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/8703ceec-9342-47f4-962c-00569ecd870d.json and https://artists.proofprofile.net/proofs/artist/8703ceec-9342-47f4-962c-00569ecd870d.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 0xfbdcc56410eae023f81cc282e25c6b3cd4d1b2e072d90724623619de6b6d34dd. 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/PLC590800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44c371341c55d0dcad8eee3bc7242fb3a41899864a6c85557749031c74367ec. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/PLC590800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac2027ece544807843e3f8398dcddfd0edbbe709fc7b9db43ca05d8770b351d5. 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/PLC590800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c89ed16b48881267533705ea5b563031f7f8be1c89b2979e2a5a4eee383b930. 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/PLC590800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15df6287c5a50b51df6aa21fee8a9e15395f6a58ab77f9df950e72f9322d0f67. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/PLC590800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a29459dab233148fa970a5e0203d105b59b08a6e97a3755c5a7b4df7052bb82. 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/PLC590800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029252659eaea2eae0f152a13ac4b6362834ef9fdbf37a82faba9fdd09ac011e. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:07:32Z), 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/PLC590800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922d60eb363cb0f82f4e6fbe991c5c27e9bf097a77170a8f3dd6e8d6aba26f67. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/PLC590800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x577b25fa30cb23d2511eb3aba75e5a4c3e5e054866cadb2cd01fe1717bda82f3. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:47:43Z), 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/PLC590800016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc88ae0ee816522490338b4fcee60f531dd9523aa938ea284f87222e8b68b7ee. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/PLB381600259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3f7c79f2cab837de2281f33d165731be8bdfe84b5544a2361ce03f376c7ab6. 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/PLB381700280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe275097a446112ee0dde2d30c16d99472f3071ee59eab2f5ca1781f9fed2c976. 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/PLB381700281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a76f5399da1077f7a28ec5820ca238e50bf018a1d2df303e414cf8febbe7c84. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/PLB381700283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf302e472da9a8aa3dd17a25bf784f0a1bb629af7c704e5f3e8527a75e81b762e. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:27:46Z), 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/PLB381700285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874376861052063420ed0e75ff3d79924bf7949ead7faab836b11218ebfa7fb6. 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/PLB381700286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4c31b742bed19c4c57ca23a5b6ee13eefc6032e719e1fb1195135547a67984. 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/PLB381700288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7474cac5b25f751eea9c83987e08878a358f1486f01b22813eb3504abe8dad71. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/PLB381700289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x442ffd8096a119c1233332a5f9966dec23accdaf72f0aadfc6829b513ed7f9d3. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:38:38Z), 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/PLB381700290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68194021661bc6c0fd563952d8988c477542f59888b71eca125017efd53165b7. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:43:13Z), 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/PLB381800453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb49d6c01a7566053fa52741d0f3d35fc3aeb95079aa1d315f9190df68fa2b57. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/PLC592000177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafed0a87bb4d2322432b3e1f91d5ef5470c81ebfb3cf8800662cc4156986144a. 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/PLC592000178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc026faf421b641fa3a950718c4007dfc4776200ebc6fbbd43ff2f0b830cd1617. 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/PLC592000179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6537295c0474a1b96841482c0c1a138e36eba1eb254a34878008dac507df13c. 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/PLC592000180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14774ecd8dae589209fada8babce84323261502cc8e6ae2bf24600fc4619b1ba. 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/PLC592000183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e647b5c21d90e0f13f3d0b704c375b96ed4996fdeba403e9a4e5d0ee0c15d4. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/PLC592000184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03924a92b147d179157c7310ae254b57b23a97f2480464b1a3563ba7ce07bd58. 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/PLC592000185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce428002fa4b972e01862d460c4352a7a37fd2482500caa64acc689e90e3856. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/PLC592000186.
Brokat (Muzyka z serialu oryginalnego Netflix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x768e6f831452cb3d46cedcb45f470102353b4648da7bee1cf0d26bc2a9cc85d9. 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/QZ8BZ2204205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6265476cdbfab59fe77c148fdfb9337cf6cde507d334ce7421135f503e8bf779. 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/PLA551000335.
Vaiana - Skarb Oceanu - Ścieżka dźwiękowa polskiej wersji/Deluxe Edition
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267e38dc4cf4900ee071035502c2f003ca92d7cfbcf05100e574b6580f2d0b32. 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/USWD11677970.
Ostatnia nocka ale to DRILL - Radio Edit
Ostatnia nocka ale to DRILL (Radio Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cefdd0929381bbef5d1d88824cff8c500a4edd787f9337372cd275ecdfcf48d. 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/PLF392130122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619bef5a509c2c4f854afcc44d4600675f9dcf038952cae22a0a94a418c3b5e0. 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/PLF392130121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dfc6952d16d1f6a84cbe80b9dd96de25795c480cdb5a348f3343591634e37b4. 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/PLI366665690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e31dbff70fae245fdd2b4410697e46f8d89cd760265be7604cdc1b728d2dde7. 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/PLB381601075.
Wszyscy muzycy to wojownicy - Remastered 2021
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ddb0a00f29461a2f8e9f4ce27b947108f8c278e2d8470e2fb703c523d2c7d4. 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/PLK682100066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a56124bf313f234a3fbeb909817ca87eac11c70355e60b6bfb7cf75c1d9a39. 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/PLA392030401.