This profile connects a public pseudonym with documented outputs. It separates education and community software from protocol authorship, a formal employment title and independent verification of financial or security claims.
The GitHub profile gorrdy gives the name Jan Dvořák and links to _Honza_Dvorak. Firefish’s own archive uses Jan “Gorrdy” Dvořák. These connect public identities; a common-name match is not enough to import another Jan Dvořák’s biography or claim officially verified identity. [GitHub — gorrdy public profile, Jan Dvořák] [Firefish — Czech and Slovak interview archive]
Firefish’s archive lists his interviews and tutorials from January 2025, November 2025 and April 2026. The public Kryptoplebs description dated 15.4.2026 explicitly says he works at Firefish. These sources do not establish a precise contractual position, ownership interest or founder role; a figure in an interview headline is not an independent financial audit. [Firefish — Czech and Slovak interview archive] [Kryptoplebs — public interview description, 15 April 2026]
The CryptoByte 2026 programme assigns Jan “Gorrdy” Dvořák the Firefish live-demonstration workshop about avoiding a bitcoin sale. It documents publicly announced product education. It does not establish completed participant loans or his authorship of the protocol itself; this review did not watch a recording of the entire workshop. [CryptoByte — official 2026 programme]
In Stackuj notes dated 17.11.2025, Josef Tětek lists discussion with Gorrdy about Jednadvacet’s development, Cashu, Bitchat and the Knots versus Bitcoin Core dispute. The notes document subjects of public discussion, not his exclusive leadership of the whole community. The entire recording was not played for this review. [Josef Tětek — Gorrdy interview notes, 17 November 2025]
The gorrdy/jednadvacet-app repository describes a local-first PWA with a meetup calendar, communities, a Cashu wallet and encrypted data through Evolu. This is a specific published software output under his account. Repository availability does not establish adoption by all communities or sole authorship of every component used. [GitHub — gorrdy public profile, Jan Dvořák] [gorrdy — Jednadvacet app README and explicit early-stage limits]
The app’s README explicitly labels the project early-stage and unsuitable for production use. It warns of backups becoming unreadable between versions and Cashu wallet funds being lost through bugs. This profile therefore does not present the application as proven custody; it was neither installed nor funded. [gorrdy — Jednadvacet app README and explicit early-stage limits]
The README explains push-notification limits: the push provider knows the endpoint address, and an overly narrow group with one user weakens anonymity. The feature name therefore does not prove an absence of network metadata. This is the project’s declaration, not an independent security audit result. [gorrdy — Jednadvacet app README and explicit early-stage limits]
The Kryptoplebs description connects Gorrdy with explanations of Cashu and Lightning Network. NUT-00 describes tokens issued and verified by a mint: a blind signature is not proof of reserves or a redemption guarantee. Teaching this model does not make Gorrdy the protocol’s author, and a token transfer is not automatically a Lightning Network payment. [Kryptoplebs — public interview description, 15 April 2026] [Cashu — NUT-00 protocol and token model]
For the clearest picture, read this entry together with Jednadvacet, Firefish, Lightning Network, Cashu. The reverse links also lead from Firefish.