Patrycja Markowska (born 21 December 1979, Warsaw) is a Polish pop rock singer. She was the winner of the television contest Odkrywamy talenty (Discovering Talents) in 1994. Markowska has released ni
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 0x15d2c68b0984bf5b330a4c81f544196359fc11baf7bd74a9ef5b52aa4014a618. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b08f4155-b16e-4f95-aa76-99782040c000.json and https://artists.proofprofile.net/proofs/artist/b08f4155-b16e-4f95-aa76-99782040c000.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 0x7e6dd789bf42eeeef354dbc325139ff71b8424f8a3532c993bd9f3724c0750e7. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/PLUM71201484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb46be7f3e04860f97ff4d0d20cd6ffcd7dd3d2e220ee2911b4c20a2d61d7c881. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:55:17Z), 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/PLUM71201488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ef5254553bb375dbcc5c7fc1b1aa25928e9edfabd91eb4c2358166f43c4a0d. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/PLUM70500137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77235196348523d833ba6e1a12e380fb2b1c47e8e95b1f7ecd289cfd0d55d3ef. 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/PLUM70500135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f9b6caf3ea6a6035d99d6f89f2ab1fe863b3aec6da44fb2bffce1fdea229c1. 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/PLA550700028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53075a5582566279d3825f2e8fe50a44eda2fb308139893ac3394dcbff55b000. 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/PLA550700018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5b8009d4f565d8a4d2122370816cd4a2e784ebe085bd9d0bf24abe1be872e3. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/PLA550700022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2f387c10626ae5a9951550262dde2a6e29531818b39cee323ac5fe6b53f365. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/PLF301300301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04746c5836c91d206fe615652bc20a17923388fdaa946d881228f6cb0ef3559. 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/PLF301300304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe10fbc90bcc8686aa1cf0e1ce8665cb2b7079a80b535b150f2f43db53dbd7da. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/PLF301300308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc830a805c3552ead837d0d10582c35a180b888153a060b01e28f1e351c422b. 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/PLF301500062.
Bys spojrzal na mnie (feat. Marek Dyjak)
Nie potrzeba mi nic wiecej (feat. Grzegorz Skawinski)
Nie potrzeba mi nic więcej (feat. Grzegorz Skawiński)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147735bc20ab9828d641f901816dca2044f7ecdf931bab7ccf6d33466f983191. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/PLF301700502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa0b6a00da6f5b52e4e7acc348ada0eec4bb793bb37db28129177708dc8a39d3. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/PLF301700503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d9be23624c3eb45e4a8f6fab14845bf14dbb820d56e9a7ac03fa75d65476a9. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/PLF301700504.
Byś spojrzał na mnie (feat. Marek Dyjak)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e2a7c1682cf121524d534c8bfb48d050d122291472d624251ca0e614c2c52e. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/PLF301700506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafbac9143f1ebb416c4bebfb088d5aa545060d9b8dc11c04d17cee2a95a728e7. 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/PLF301700508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa38fafcb6ca116cebb24b90186be6ccaf5633806d75b73fab9eed9fabf1ce970. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/PLF301700511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9b016c11cc473787b95aa6ed1f0135b5de96401b2e9e2999eb551d035d1dfa. 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/PLF301700513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9445103f847aac6fb551575ad826c2fb3179458af5f98199302ae8fdcc1122. 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/PLC591800304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d16bf8850bac34f9ca9c2d633be2b8abec1abb6907a0fd52405976620e26f5. 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/PLC591800310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d6886e8c54a4db7b6f45100893d921391dae139d7b8f891e877552f3fc7463. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/PLF302000830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060de23c44ec17939b048af9d835151fdebc681729a0250eab1eb5180513bbb8. 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/PLC592100217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d6886e8c54a4db7b6f45100893d921391dae139d7b8f891e877552f3fc7463. 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/PLF302000830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c2087ac0762e33e0e814c5fe7d79ee472deb51c5ca3b3a6018379b450a6647. 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/PLC592200042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd75595c0d88e6f345ee1688ed18adc42ae5605305265fb10a52e9abbd43ad87. 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/PLC592200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b0a838dea97b504d9c16c6026226a8fd387c66bd132c79828fccc841d41cc8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/PLC592200033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bca0e82c45b2d291dd2abb3fc53f5a6d374f6acd8bfb5aa6f800795e0132edb. 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/PLC592200034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8cdd39e8c181ac62dc4ef916fae5e6084a6b29003d6102e4c6eade5b6150246. 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/PLC592200039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8269fd6adaea2ddfb293b2ae86a1e940a407a24607ba6a39610a6e42365c022. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/PLF302000840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf55630f1e1033916a4d04fac90835533eb23398077558a8ad912248b1bffd34. 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/PLA552500321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf9a468f19eaf6c3b2e7c44a75f89b840f7c238a28f34fd28e03d47f8c3a11ce. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:19:35Z), 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/PLA552500322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3527d4411dda508c70c321c3907657d27aba8669db26bbb76b4a12c1e3f73846. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/PLA552500323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9500dd50cf04471dcaab26fe746fe530bdf13615422d1c4f116891e2ecb9fe. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/PLA552500324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d2ff933e1fe9d429a7678cf8ab113c8c9a0837a2c7e3d681d002454a5016a4. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/PLA552500325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1cebff3a1a12b17168cb86a262a47de1424daa1409e7d9b6c6312236404f753. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/PLA552500326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403ef55a1914c7d08b0393f71ec5e3c7e7fccbe1f1c9e9709d0849f4fdd1cc1e. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:49:38Z), 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/PLA552500327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f532492fff0e3803023a65a13eefa0b2cb46376a0622b92f02f247a37cb4945. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:11:06Z), 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/PLA552500328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff85f24ba1a31fa09d36ec72671e246bd730c159cf93ffc95ae82945e2cacc16. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/PLC691101748.