Lukasz Polkowski, known professionally as LukHash, is a Polish electronic music composer and producer. He is best known for making chiptune music, often blended with other styles, particularly synthwa
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 0x6165c0f85caab1024c3b3eeb270a8f7c91da902e943e99d8fb208084d85a0341. 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/20993eb4-1d5b-4bfe-9365-e776cfb4c024.json and https://artists.proofprofile.net/proofs/artist/20993eb4-1d5b-4bfe-9365-e776cfb4c024.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 0x647a0449bbf57845d8a511269b08fb45df8ad31125b6e5502294d0886e9de328. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USDY41504466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32885a76f2b07278a29e5b34a258a52798149f22d0be25bc2bfd74ff8fcc01d. 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/USDY41504467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf5e4fbe06462ae854736daddeadd79f1e24a41c0ebbdc110ac8d7966567046. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USDY41504468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb534c60719ed16838b440b97c865274cc61346a5d6f77e3a7ee88de063ade96f. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/USHM91658174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc22ec53431233adfbc3324003c79dcd18c1156dcf529c1e9358cbf4842f6ea6d. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:25:21Z), 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/USHM91810052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220eaef853686ee5026a8621b705160873adf176a341c873fd8e3af6a262116d. 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/USDY41926544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322f5af7c29d88603f856ebf7aed540c44ce304c3dd42a95fdb789bc2d560d34. 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/USDY41926545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f2589c864004b2e885885f38dc1b5b987153b63ffb7856b0dea774636fc3b6d. 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/USDY41926547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0706c966cc22b06ebe37fee67b3e36557df541f626137989f3356ddb2614b497. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USDY41926548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2cc468948f41b1a06617088399b5d040065d047606b9066cb91af391c8f6ecf. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USDY41926549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236821e9dfa6b27877f2ca753ac586a251494bfc0f2854cdf68b7fa3530f701e. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/USDY41926550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1ab488251c2924178f5fa3bb96b37b0f7c2aa96be7a40589e1a9e2d966771b. 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/USDY41926551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a59d29d60232196c7027ea56b6ee65a6bffd817528a97cf7c9ce9b08267ae40. 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/USDY41926552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x972b9fd63cee52041b3563631ced868e6d8d18a68b3c523404fa60e51e106cb6. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/TCAEN1958167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f722958c1fa458ab65403d212d0713c5931ac3ccbaedfc2838d83d528852f4. 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/TCAEN1958169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3621621f470d6dce00f652e6ea26619a830b7e72068f2b83894bc415cff25970. 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/TCAEN1958170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e80964a6b70069142a9e03712c0c304883715334d32e5a665b123f7e886bb32. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/TCAEN1958173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ac496da7e07198127fbb612cd535adca1ff47c1a2677c03982969b3ec7706c. 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/TCAEN1958174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf89467e6394132ec1c0520daf8642e6461906601ffbec7076d730137c2111e34. 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/TCAEN1958176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ba1cdfbe1b16b4f2600f14cf3f4353e322da7c3ead93bd62df65acfa29f7c2. 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/TCAFD2088098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f550062aa8f71e0067bac372e125278594658e97f720a8fedf24840dce3d20d. 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/TCAFD2049821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c1895f294d4676521e10fa0800c13d23ec4ade4c1970730f46b7b2294f63d0. 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/QZHN42109006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b11a7b184cdbc38869c150f4ad30c509bcdbff752584df8b70b1d6410aadb9e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:02:37Z), 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/QZMEM2124626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812aa31e15cb3f94c4c739045f3b9baee57cce73fc02246f3fae24f7a1b17faa. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZNWY2159745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02cf86c8d305fe96597e4c9ddd558abed130fafb67c5c94fff82fe9fbcb48fe5. 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/QZRP42154084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5478b4615e16d47efadd136e8fd863204d47b7d1d11a9de8be177a9b4fe49f70. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:56:16Z), 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/USHM82232668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684b9837502954f3516246552ed3668f21eb11c245491e62a9ab19f1b4859530. 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/USHM82257910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790bf05e44263ff5cf0a36edd427dbc0d830dfb4529ffd27691f5eaf1d27f9b2. 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/USL4Q2219591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86680e6598c878b355a45066322a480937337b68c5dcd6629ac82a484c5d6aa8. 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/USL4Q2219590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f277ca6d508b5d00d12b1fbd9d4ce8b33ff4a679b293e7a2b9d61f92ffc596e. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:17:09Z), 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/USL4Q2219592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9484508cffa29f599d595595c029e439843afb15050a2910b08f7beb85c9624. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/USCGJ2375975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0bf5e36c72a244d9e4e342ee6d329af5d74cf02139d75745b78d4ae9e6f6fb4. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/USCGJ2376094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73757581d12d198f19a136329d289d5436a696d6fcd04b9669af3b7d93725ac4. 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/USDY42375969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed07d2c26c99d6448621f3cfe43d9940c95abfeb3dee3e22f559238e646a4e1. 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/USMH92332775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684b9837502954f3516246552ed3668f21eb11c245491e62a9ab19f1b4859530. 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/USHM82257910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed07d2c26c99d6448621f3cfe43d9940c95abfeb3dee3e22f559238e646a4e1. 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/USMH92332775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ba124b8f5b70b30d8caed38f1ce5646e730631e716ea530f791a7d9ddabcd9. 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/USDY42326994.
Screaming in Space (From "Aliens Expanded")
The Last Escape (From "Terrorbytes Original Documentary Soundtrack")