DevCult

DevCult delivers DevEx & DevRel for web3. To thrive in open source, create a heaven for devs — we show you how.

[Parity Technologies @paritytech]

This is what Playground . dot was made for.

Andrey Dodonov (14 years as a developer, PBA Campus 2025) was stuck in a 4-hour delay with a major German bank. So he built something.

A Proof of Delay app on testnet. Verify your delay on-chain. Generate a certificate. Stack your minutes in a game. An authentic, untamperable dashboard of delays that actually happened.

The next generation of apps comes from human experiences.

[DevCult @_DevCult_]

45 min to go ! Last minutes to participate in Playground at @Web3summit !

Winners need to be present to reclaim their prizes !

One person can win only win prize!

ca. 15:15 at the Playground area!

[DevCult @_DevCult_]

Playground in all his glory.

Tomorrow is your chance to participate in Playground at @Web3summit

Competition ends at 14:00

Rewards and closing at 15:00

Remember, winners need to be there for the receive the prizes!

[Web3 Summit @Web3summit]

Time to build. Be sure to stop by the Playground . dot to create your version of the test app.

[DevCult @_DevCult_]

Getting things ready!

Do not miss it!

If you dont have it yet, grab a voucher at https://t.co/t3g6lhIfPW

Come to the event of the week, come to @web3summit

[DevCult @_DevCult_]

This is a speed run on how to deploy a website in top of decentralized infrastructure. It is one of the surprises you can discover at Playground . dot

We challenge you to beat the video ; )

AI agents and former Starcraft players are not eligible.

We see you tomorrow at @Web3summit

Pack your laptop, and grab your tix at: https://t.co/73j1eJMInh

Buses are available, check timetables at https://t.co/mw9S5jVHlZ

[DevCult @_DevCult_]

indeed

[DevCult @_DevCult_]

Enter Playground . dot

Tomorrow at @Web3summit we wait you at Funkhaus.

We leave you a small preview of what you are going to find out tomorrow.

Apps, rewards, code and fun. 4750 euros for grabs!

Is a 30-second GIF enough for you, or do you dare to explore it yourself?

Grab a Web3 Summit tix and don't miss it. This is the event of the week -> https://t.co/73j1eJMInh

[DevCult @_DevCult_]

Are you ready for Playground. dot ?

It's going to blow your mind tomorrow and Friday at @Web3summit .

Build something and deploy it in top of decentralized infrastructure in less time than it takes to say:

"Funkhaus is very far, are any shuttle buses to get there?".

Code, share, remix other people projects. Win rewards. Up to 4750 euros!

Grab a voucher for Web3 Summit -> https://t.co/73j1eJMInh

Check the agenda -> https://t.co/FeZjkAyER9

Plan when you are going to pick the bus -> https://t.co/mw9S5jVHlZ

Don't miss it!

[Web3 Summit @Web3summit]

🚍FREE BUS. FREE BUS. FREE BUS.🚍

Rolling through @BerBlockWeek? Web3 Summit ticket holders ride free on the shuttle straight to @nalepastrasse.

No stress. No extra fare. Just talks, installations, DJs & devs.

Next stop: Web3 Summit
Shuttle info: https://t.co/0VqhupnSIS

[Parity Technologies @paritytech]

Ahead of @Web3Summit, we published a breakdown of the open-source proof-of-concepts powering the event.

Coinage. Bulletin Chain. Technical architecture, implementation details, and the reasoning behind the design decisions.

https://t.co/DLRSMSO628

[DevCult @_DevCult_]

The @BerBlockWeek started this weekend and we hope everyone is on it already!

For those that have not decided 18 and 19 of June. We invite you to come to Funkhaus ( @nalepastrasse ) to explore and dive at Playground . dot

There is even a shuttle bus service, no excuses not come.

Grab a voucher at https://t.co/VLUgxHIvCZ !

[DevCult @_DevCult_]

"You put people together, things will happen". This is one of the greatest mottos of late 2000s, the golden era of the collaborative internet. With the remix culture at its peak, everything looked bright and right.

Snowden papers came some years laters, bringing a huge and depressive dark cloud to the net.

Playground . dot at @Web3summit reclaims the same spirit but with renovated energy to fight what internet has become today. The Information Highway utopia, became a toll system to be paid with your attention, your rights and your money.

There is something at the end of the tunnel and it is not a train coming in the other direction.

Enter Playground . dot

A temporary, event-only demonet environment is being fired up for pure, unadulterated experimentation. It's a 2-day open workshop where you can explore a sandbox environment to create, modify, and share without the usual pains of dealing with decentralized infrastructure.

What you, your team, or your festival partners choose to spin up, modify, and remix inside this sandbox environment is 100% up to you.

Take an existing project, modify it, share it, and see what happens. It’s the raw energy of a hackathon inside a web3 culture festival.

DevCult will be on the ground to support builders - like you - digging into the demo apps. There’s no competition here; it is just a celebration of open culture, learning by doing, and a 4,750€ reward pool for builder teams pushing the tech to its limits.

🎖️Leaderboard winners - 1750 € pool between 1st, 2nd and 3rd

💕 Builder favourite app - 1000 €

👩‍💻 Crowd favourite app - 1000 €

💥 Wildcards for innovation and interesting use cases - 500 € wildcards x2

⁉️Do you want to explore it with us? Bring your laptop and reclaim a voucher at the link below for your @Web3summit tix.

🗺️ Where: Funkhaus, Berlin

🚌 Shuttle Bus Info: https://t.co/mw9S5jVHlZ

📅When: June 18-19 during Berlin Blockchain Week

💫 Get Started: https://t.co/Pi0wI5FCOU

🎟️Grab a Voucher to experience https://t.co/kg5N3SUkGz at Web3 Summit : https://t.co/73j1eJMInh

[DevCult @_DevCult_]

In one week, we will be at @nalepastrasse submerged in the @Web3summit - we will at playground . dot supporting builders and curious people, definitively playing with some new.

But what is playground . dot ?

It's a 2-day open workshop where you can explore a sandbox environment to create, modify, and share without the usual pains of dealing with decentralized infrastructure. What you, your team, or your festival partners choose to spin up, modify, and remix inside this sandbox environment is 100% up to you.

Take an existing project, modify it, share it, and see what happens. It’s the raw energy of a hackathon inside a web3 culture festival.

DevCult will be on the ground to support builders - like you - digging into the demo apps. There’s no competition here; it is just a celebration of open culture, learning by doing, and a 4,750€ reward pool for builder teams pushing the tech to its limits.

Leaderboard winners - 1750 € pool between 1st, 2nd and 3rd
Builder favourite app - 1000 €
Crowd favourite app - 1000 €
Wildcards for innovation and interesting use cases - 2x500 €

Do you want to explore it with us? Bring your laptop and reclaim a voucher at this link for your @Web3summit tix.

🗺️ Where: Funkhaus, Berlin
📅 When: June 18-19 during Berlin Blockchain Week
💻 Get Started: Link to https://t.co/kg5N3SUkGz
🎁Grab a Voucher to experience https://t.co/kg5N3SUkGz at Web3 Summit !

[Birdo @itsbirdo_]

👀 iykyk

[DevCult @_DevCult_]

Mr @LeemoXD and his synthetic frend are going down the rabbit hole of the recently published repos by @paritytech .

Not all is in the open, but with some imagination ...

Are you really going to miss @Web3summit ?

Grab a voucher at https://t.co/II4VmY6yg4 so you don't have excuse.

4750 euros in grabs! Don't forget to pack your laptop, and pass by playground . dot !

[Leemo @LeemoXD]

State of play as of right now – once again, just in case, all of these things are referenced in publicly available documentation, such as the w3s-architecture repo, so don't get triggered, ta.

Also, it's probably not the full list.

✅ = repo is public
🔒 = repo is private, but is referenced in public docs

🎯 Consumer apps (the end products)

- 🔒 dotli — "Polkadot Web", the flagship web app
- 🔒 polkadot-app-ios-v2 / polkadot-app-android-v2 — next-gen Polkadot mobile apps
- 🔒 polkadot-desktop — Polkadot Desktop (the host browser products run inside)
- 🔒 tick3t — W3S event ticketing
- 🔒 w3s-conference-app — festival / conference app
- 🔒 t3rminal — POS terminal, contains W3S Pay · ✅ t3rminal-OS-test is a public POC cut
- 🔒 p2p-market ("LocalDot") — P2P marketplace
- 🔒 mercado — marketplace
- 🔒 product-preview-net ("Previewnet") — preview/staging network

🧩 Demo / example apps (reference patterns)

- ✅ browse ("https://t.co/lkTJz1Ovy0") — discovery store for privacy apps (SPA + widget + contracts + SDK)
- ✅ game-results-webview — post-game celebration screen (native WebView)
- ✅ pocket-collectibles-webview — animated NFT gallery (art derived from hash)
- ✅ onchain-arcade — real-time multiplayer Tic-Tac-Toe on Asset Hub
- ✅ Rock-Paper-Scissors (+ -v0 snapshot) — on-chain RPS w/ commit-reveal multiplayer
- ✅ feedback-board (+ -v0 snapshot) — decentralized sticky-note board
- ✅ simple-survey — on-chain surveys

🛠 SDKs & protocols (the platform)

- ✅ truapi — TrUAPI: the host↔product (webview) communication protocol — foundational
- ✅ product-sdk — @parity/product-sdk family (~15 packages): chain, tx, signer, contracts, storage…
- ✅ polkadot-apps — @polkadot-apps/* reusable component SDK + canonical examples hub
- ✅ triangle-js-sdks — earlier/lower-level host + product SDK collection
- 🔒 host-api-test-sdk — testing suite for the Host API

🔧 Contract & dev tooling

- ✅ contract-dependency-manager (CDM) — package manager / deploy tool for PVM contracts
- ✅ contract-developer-tools — system contracts: contexts, reputation, disputes
- ✅ cargo-pvm-contract — build commands for Rust PVM contracts
- ✅ playground-cli — playground/pg CLI (toolchain + login + deploy)
- ✅ playground-app-template — React starter template
- ✅ dotli-starter — vanilla HTML/JS starter template (went public today)
- ✅ playground-tutorial — guided level-by-level "web app → on-chain product" tutorial
- 🔒 playground-app — the Playground app itself
- 🔒 playground-constellation — (Playground component)
- 🔒 bulletin-deploy — deploy tool for publishing to <name>.dot

🪪 Identity & naming

- ✅ dotns — .dot naming system (ENS-like, w/ Proof-of-Personhood gateway)
- ✅ dotns-sdk — client tooling/CLI for dotns
- ✅ bcts — privacy/identity crypto primitives (Gordian Envelope, Shamir, XID DIDs, FROST)
- 🔒 individuality — personhood/identity chain
- 🔒 identity-backend — identity backend service

💾 Storage & data

- ✅ web3-storage — decentralized storage w/ staking & slashing (Substrate)
- ✅ polkadot-bulletin-chain — off-chain content-addressed storage chain
- ✅ statement-store-tools — latency benchmark for the Statement Store
pub/sub layer
- ✅ attestation-protocol — permissionless on-chain attestations (Solidity)

🗂 Meta / ops

- ✅ w3s-architecture — the open-sourcing map itself (tracks public/private status)
- ✅ summit-net-help-desk — issue-tracker help desk for the event network
- ✅ polkadot-app-design-system (+ -ios / -android / -desktop) — shared design tokens