Julia Pietrucha (Polish pronunciation: ; born 17 March 1989 in Warsaw) is a Polish actress, singer, and model. In 2007, she won the Special Acting Award at the Gdynia Film Festival for her performance
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 0xf19662979264fd12c3a1860bebc5038750684e476498d64498fd9695f7c9b26d. 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/d552b3f7-0cc2-476f-af8b-3c40d297d48b.json and https://artists.proofprofile.net/proofs/artist/d552b3f7-0cc2-476f-af8b-3c40d297d48b.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 0x53629dc1cff1bb59c6ec342983a7c1442e537b812d3677ac9f495f13bd746d5e. 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/PLR421600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06471303de44d843b38784ede4e91adaa23cdc270a02c38c0b3619a5de21351. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/PLR421600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dfc2c8a79e28f37fef725eda30f69a4762ec04a293d2c0425df3d70a552da91. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/PLR421600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd6a6cc2a9c99983cb7c87ccd64424c8e382facdf083806900c70a3bf71d834. 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/PLR421600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1c6bbf0e7f7d60a2d624e08c5efb6eac98eb61c395cad4de34ea88864097fe. 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/PLR421600011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25c816ed99c21c7852efb699e272111f61bbdb3bd14fa5b45885af49ebf8ea7. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/PLR421600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd30e399088c04248d5076a1929355e74f9db2ea841155a3174dee6f246b965. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/PLR421600013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d038e5e4558b478d024967ae84d374793172e027370db752b4c73e5ccfc9777. 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/PLR421600015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4cd249647187c5e4dbc636c0295f7b3ee7b2037f29125adcc5511808de1079. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/PLR421800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43b928ce600c5678e330e598b3a8dd1f70b8302c391617780bee9fba2e42f2e. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/PLR421800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93236329bd74b3f014e7b8e368a87817554c00567f8be9e44f61ecfe64f1e9c7. 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/PLR421800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e24c648e0de540c8cf0e0ddf531e82ab9dd76682ac68871af927a0c69d65c91. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/PLR421800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a45a351a75c6dc39fd4953fe7cd8f39f9f4676e0b5c090ff4adb5e82f7d441d. Chain 2 (Bitcoin): anchored in block 957564 (2026-07-11T12:19:47Z), 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/PLR421800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91522fcb2e12095602f0b6b79a9cbcd5050fcd2a95b76edaae1ab7ffa58c224. 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/PLR421800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4fae40b0a03e58056ff7f94e383a3a82351839d60556d56d776b6ce0dd839d8. 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/PLR421800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c50401a132b86fe505455928491211615b907940b08c94df45ebe6028aae59c. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/PLR421800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3b4bb05760792b30e7bc35cacbbfa7dae57a75fa39cf7759e6f999a49b385d. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/PLR421800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d75ab8fa8888ab6af4248510522af8da202d1d3faa4e95ec5a10b410b0cb778. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/QZHN51919167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5f342c5576c62368d89713dd23045075427eb5df3f12c83ef367294575db37. 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/PLR422000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb5d0858842161042b364933b2d854c3274fd3474d94fec1a810de4d445ef4d. 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/PLR422000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4895a22ed458b8c4dc701f75a06423640a52042eee3d1730e356d5c196fc8ac6. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/PLR422000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c374d854e3217270e2406e4128206c746a84444ff3c54badb6b527d3a49bad5. 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/PLR422000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc515c2810c5c64fb4ba0671667939d33033843c0203abb62a5b554692c05c928. 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/PLR422000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eebc7807db444c3df121c70240dbcf726d836434e424697601ad6a134d0a22c. 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/PLR422000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665a3a533b496045d39bbdc42e356fd7175bc9403a770b3c4fe20d49404a56dd. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/PLR422000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a91ee0dab645e042613fa0ee78b6db89eeda8a7b63468ff4231d4b3fbd6612. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/PLR422000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8aae3576a33c94934a0be6f9c409885ccd96b8e1194699e66b33f5c94f1db0. 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/PLB822300246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e1735f80778b85b4c770598c803d003ac20bcdf325ea7c1d719d37a8b2e879b. 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/PLL582100007.
Pieśni Współczesne (live at Cavatina Hall)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9896719b614f7a228c2b2573b7907daa11c7d1faf1a0341136ae6ff1b71c540e. 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/PLL582200014.