Jaroslav Hašek (; 3 April 1883 – 3 January 1923) was a Czech writer, humorist, satirist, journalist, bohemian, first anarchist and then communist, and commissar of the Red Army against the Czechoslova
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 0xb25d7148f6a2d9773eb88c8044b7027f59e140dfbba1cc22a656d9296ec32910. 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/1ad65023-e315-4a55-ad5d-186336699d01.json and https://artists.proofprofile.net/proofs/artist/1ad65023-e315-4a55-ad5d-186336699d01.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Osudy dobrého vojáka Švejka – V zázemí (1. díl)
Chapter 1 & Chapter 2.1 - Osudy dobrého vojáka Švejka – V zázemí (1. díl)
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 0xad62c4d15d9875c82c7ad355b0fcf27d718a063a1fd5cd670142e572a6215053. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEVP80479861 — a six-check JSON result.
Chapter 2.2 - Osudy dobrého vojáka Švejka – V zázemí (1. díl)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1c205a1749a18bdba3655fb03eab24c06b812ad997d7a661124d9ab1a2a232. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEVP80479862 — a six-check JSON result.
Chapter 2.3 - Osudy dobrého vojáka Švejka – V zázemí (1. díl)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ffab3471375d1c46e72d60fd6651fda9d635860d462cee0a8d5ad7a58bf6211. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEVP80479863 — a six-check JSON result.
Chapter 2.4 - Osudy dobrého vojáka Švejka – V zázemí (1. díl)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34094cc96b68b0edf01fb1de836fc51a4ccafbf7ff8915ba156d9baff5c1e081. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEVP80479864 — a six-check JSON result.
Chapter 2.5 - Osudy dobrého vojáka Švejka – V zázemí (1. díl)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c2bd5cdc12cf3d838dea6e3c6419a119dddaa304fb9164a505ef7957a20a25. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEVP80479865 — a six-check JSON result.
Chapter 2.6 - Osudy dobrého vojáka Švejka – V zázemí (1. díl)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf819ec7b279d461c64138f2665d446c84741ffe3aeaa0304c5ee5f031aefed9c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEVP80479866 — a six-check JSON result.
Chapter 2.7 - Osudy dobrého vojáka Švejka – V zázemí (1. díl)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25035b4777882ff4db7b28b1a515f3cbfb2cccc3654eb8ed00d9c41ecefad5cc. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEVP80479867 — a six-check JSON result.
Chapter 2.9 & Chapter 3.1 - Osudy dobrého vojáka Švejka – V zázemí (1. díl)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x746814ef28655ed6c47d3c37e3f4ca61f0782f6023d1594ed302559dbf7206c8. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEVP80479869 — a six-check JSON result.
Chapter 3.2 - Osudy dobrého vojáka Švejka – V zázemí (1. díl)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f310458b840fc0189ceeb2ec5bcd4368a31223d25f50ec9f0a98f6c081e20c. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEVP80479870 — a six-check JSON result.
Chapter 3.4 - Osudy dobrého vojáka Švejka – V zázemí (1. díl)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d76c576608052a1cc04fd09a4ae4b37665019f315a5c9ac81743c0121d3b55a. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEVP80479872 — a six-check JSON result.
Chapter 3.5 - Osudy dobrého vojáka Švejka – V zázemí (1. díl)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf52bc31afee9cf7db27c45c22d4d4119542b09892613407dd33507ca92132e0. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEVP80479873 — a six-check JSON result.
Chapter 3.7 - Osudy dobrého vojáka Švejka – V zázemí (1. díl)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf665fa4cb45325576e4b22b263277dff879f94cae757b9001d298871d2103cb. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEVP80479875 — a six-check JSON result.
Chapter 4.4 - Osudy dobrého vojáka Švejka – V zázemí (1. díl)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999308a3b72cffdfebecce2db0fb0eb45e304404a58467e13d2acd24e16cbf2c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEVP80479879 — a six-check JSON result.
Chapter 5.3 - Osudy dobrého vojáka Švejka – V zázemí (1. díl)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff36ab1844ddd8092267f36dfe9c35184f03bbcc2f107ce147b2d0fb57859ff6. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEVP80479883 — a six-check JSON result.
Chapter 5.5 & Chapter 6.1 - Osudy dobrého vojáka Švejka – V zázemí (1. díl)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e61ea18bfd5b2d2b21a5f127d717c8aa1757bc64474e5f513b1a1ceae246a04. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEVP80479885 — a six-check JSON result.
Chapter 6.4 - Osudy dobrého vojáka Švejka – V zázemí (1. díl)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf46cfc264c53dee78f448b5f6691d6c602bdbbaf86680f85221ce29d65990d0. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEVP80479888 — a six-check JSON result.
Chapter 7.2 - Osudy dobrého vojáka Švejka – V zázemí (1. díl)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b1f1ea642469c8bd4edf5962d1ecb0968b97a814fcb3b1ef4cea97300d119f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEVP80479892 — a six-check JSON result.
Chapter 7.3 - Osudy dobrého vojáka Švejka – V zázemí (1. díl)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e51b813739fc55af0878b1a344910120cdd7af27d54a443cbe752b7181b2fb. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEVP80479893 — a six-check JSON result.
Chapter 7.5 - Osudy dobrého vojáka Švejka – V zázemí (1. díl)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a99aa699aa229d372dbf32229c83b66544a70b8b4900d81c556ae3245839fac. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEVP80479895 — a six-check JSON result.
Chapter 8.4 - Osudy dobrého vojáka Švejka – V zázemí (1. díl)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7119303449a0b861a91f02ca77b49b2b5dfc77280fa38880ff943d1c7baed429. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEVP80479902 — a six-check JSON result.
Osudy dobrého vojáka Švejka – Na frontě (2. díl)
Osudy dobrého vojáka Švejka – Slavný výprask (3. díl)
Osudy dobrého vojáka Švejka – Pokračování slavného výprasku (4. díl)
Die Abenteuer des braven Soldaten Schwejk