Dukla is a town and an eponymous municipality in southeastern Poland, in the Subcarpathian Voivodeship. As of December 2021, the town has a population of 2,017. The total area of the commune is . Duk
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 0x395294519d0e85afec2289c27c8333b2353d1005c641a33a6046fd37bbadfdbe. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e25270e6-4430-4c24-818c-0536d5391802.json and https://artists.proofprofile.net/proofs/artist/e25270e6-4430-4c24-818c-0536d5391802.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 0x66f6c5c4c290581ffb59cbe54f2b930d6339f04df51844d8541fa32b71b676fc. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/QZAPG1857558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9b2d89e87d78925efb8dfe570994f8bd3cc22e59fe8b9a8d7a501ba0e63a2a. 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/QZAPG1857559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f464b6ccd42fbe3a4becf6d721c8637d660d15c7a6a620e7dafd9baf7da0da. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QZAPG1857560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671ca9d9f0937462258664b8ca3335c6928ce4266533d7d9bd40fe030afea807. 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/QZAPG1857561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952f0a89a7566109a0e1422ae0d622de2774be0bfe2b40b7e3c16d0c747e96cf. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QM2PV1830733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d0770ce2997e5cd80e9b87825c9a6b69259b3ca4fa779c74db77aa1b462116. 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/QM2PV1830734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2e17ceb159ba4a44a1817f9c745eef5cd426e6d553c3b2bea5b38216115fc8. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QM2PV1830735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63fc650bcf2da45b4c618dda53eb8ee246a9c20a3bd626b5fbc170d1e264ccb6. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QM2PV1830736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6984f6bfd75995a1891b94404202bf82bcfa6ccb250f46180807ef437e62f9f3. 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/QM2PV1830738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb4b9d1dd9329d55f05a454ba463df332c64d1e53046d0943bd53ccf6b0f526. 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/QM2PV1830739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefee7c9c4019a501b7641112007fd439cc25c1847ed8bed61be4c52f3f20d625. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:45:45Z), 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/QZES71806865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd789305a690bb96fc05e224da68905077b2000439d9ee0105620ddd74b0fe6f8. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:19:41Z), 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/QZDA41963292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33917f8c2824702e31db8b621a3da412e9a6369116f652aab6d3657688b306aa. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZDA41963293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc2443966068d13bc441e6ac8026d215311948357a84a3c0875561fcba4eeb8e. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/QZK6H2051336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbffdf8b80e5cea3a7aab03b1848e59970737eddf465b6271f7ca0f08be5358cc. 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/QZK6H2051338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c9dd6e28b79e18dc14a25eb156e3fc9b77edd5d5fe9582b92dfb7af16d922f2. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZK6H2051341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf104cf03fbbc191462b58c93d239442abefcedba835ef080609e5bea58ad655c. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZK6H2051343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b722b2157555cbd6f560fbb8f023c4ebc59d0ec8ab6052a4da876c3b6e062eb. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZK6H2051344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc4b85d614e05178916e3d006981f88cffb8497a9460a86239e662ed80eb025. 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/QZHN32154657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0231da408267da106eca87f2cd2c1c186d50bbee9766ffbe698fe8751ed9d479. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QZHN32154658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41919c869f4c534121c842a87ac21f68aa0133d629cdccf53fe8015e6d2bf3c4. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZHN32154659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x516555be54ee6888b97a0cc1c9ac2caa79cd4f1de2326562ffc564be8c159c45. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:33:03Z), 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/QZHN32154661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c2d28213b0dcd4595680d05ecef50e15522e02918373c3cd914382ecfec8fdb. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZES92270326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c3939235cdb67012de6590eb27b8a9fbb91e34d8dcc2fedcdcb1afccc47c3f. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:31:35Z), 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/QZES82235104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193337085d84a34b9d96ac66866df13396bc95c7dc5a23ab44d0f02dae1dda14. 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/QZES92270327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c8440c9565337dbb24aab1d7415cc56e034301ab3de8d53f56e34a7246920d. Chain 2 (Bitcoin): anchored in block 957591 (2026-07-11T17:21:30Z), 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/QZTB42228042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39feb347107f67406d68440ccc282abc68346f278ad6c0236854825082b7456c. 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/QZTB42228044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0f798742b312532159007da2880ee57571643aca0485f8d8109d24de0e2d34. 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/CZA232400124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96fa196d5360ef88349d67e94688e49f533fff9edde8aa4f588951d075ab4e73. 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/CZA232400126.