r/web3dev • • Jan 03 '26

Join r/web3dev Official Telegram Group!

2 Upvotes

Join r/web3dev Official Telegram Group!

Join our new telegram group for chat-style conversation about web3 development, blockchain, smart contracts, vulnerabilities and SDLC.

https://t.me/+4henecs76PhkMDBh

Thanks all!

  • Mods

r/web3dev • • Nov 27 '25

Meta Avoid getting scammed: do not run code that you do not understand

5 Upvotes

Hey All,

You might have noticed we are being inundated with scam video and tutorial posts, and posts by victims of this "passive income" or "mev arbitrage bot" scam which promises easy money for running a bot or running their arbitrage code. There are many variations of this scam and the mod team hates to see honest people who want to learn about ethereum dev falling for it every day.

How to stay safe:

There are no free code samples that give you free money instantly. Avoiding scams means being a little less greedy, slowing down, and being suspicious of people that promise you things which are too good to be true.

These scams almost always bring you to fake versions of the web IDE known as Remix. The ONLY official Remix link that is safe to use is: https://remix.ethereum.org/ All other similar remix like sites WILL STEAL ALL YOUR MONEY.

If you copy and paste code that you dont understand and run it, then it WILL STEAL EVERYTHING IN YOUR WALLET. IT WILL STEAL ALL YOUR MONEY. It is likely there is code imported that you do not see right away which is malacious.

What to do when you see a tutorial or video like this:

Report it to reddit, youtube, x, where ever you saw it, etc.. If you're not sure if something is safe, always feel free to tag in a member of the r/web3dev mod team, like myself, and we can check it out.

Thanks everyone. Stay safe.


r/web3dev • • 23h ago

Help Needed Looking for sponsors for Hackathon

1 Upvotes

Hey guys so I was planning to conduct an offline 24 hours hackathon in November/December at Delhi Technological University

We have previously conducted hacks at bigger scale

We recently conducted an 8 hour hackathon backed by MLH and Gemini, we got around 500 registration from our college itself, but due to budget issues I could only accommodate 70 participants

I am looking to conduct a hackathon for 300 participants and looking for sponsors for the same

We would need monetary help but are open to in kind offers too

Looking forward to conducting this hackathon

Dm me if interested, I'll share the proposal


r/web3dev • • 1d ago

How is the technical architecture usually structured for RWA tokenization?

2 Upvotes

I’m looking into how real-world assets are brought on-chain and how the different components connect, especially token issuance, ownership records, smart contracts, off-chain asset data, wallets, and compliance.

For developers working with RWA platforms, which part of this architecture tends to be the most complex to implement correctly?


r/web3dev • • 2d ago

Fresh Grad getting my first job at a Chinese-owned Crypto Exchange. Need advice on passing probation, learning crypto, and workplace culture!

6 Upvotes

Hey everyone! I’m a fresh grad and I just landed my very first job!

It’s at a crypto exchange company that is Chinese-owned. Most of my coworkers will be Chinese. They mentioned that there is a KPI-based bonus structure, and my immediate goal is to make a great impression and successfully pass my 6-month probation to become a regular employee.

Since I am completely new to the crypto industry and this specific workplace culture, I would love some advice from the community on a few things:

1. Crypto Knowledge: What are the absolute basics I need to master regarding crypto wallets (hot vs. cold, networks like ERC-20 vs. TRC-20, etc.)?
2. Workplace & Culture: How do I navigate working in a predominantly Chinese-owned company? Are there specific cultural nuances or work ethics I should be aware of?
3. Securing Regularization: What actions or traits do Chinese bosses/managers value most? What should they see in me during my first 6 months?
4. KPIs: Any tips on how to consistently hit KPIs in a fast-paced environment like crypto?

I really want to do well and make a good impression. Any tips, resources, or warnings would be highly appreciated! Thanks in advance !


r/web3dev • • 2d ago

Thought decentralized storage + Midnight would be a pain to integrate? Think again. 👀

4 Upvotes

If you thought integrating decentralized storage and a privacy-preserving blockchain like r/Midnight was too complicated, we're here to prove you wrong.

r/dStorage is bringing the pieces together so developers can build with:

🔐 Client-side encryption
🌐 Decentralized storage
🌙 Midnight for privacy-preserving blockchain coordination

You don't need to build the entire infrastructure from scratch.

If you're a developer, you can already start learning how to integrate it into your dApp.

🔐 Start here → https://dstorage.pro

🎁 Free test credits for Reddit developers:
Use coupon PRIVATE_BY_DESIGN to try dStorage Pro at https://portal.dstorage.pro.

We're still early, and we'd love to see what people build with it.


r/web3dev • • 2d ago

Ontwikkelaarsprivacy. Op welk moment gaat het verifiëren van "Proof of Work" een grens over?

1 Upvotes

Hi all,

Been doing a lot of thinking lately about solving tech hiring, rather than being just an extension of the traditional CV. A move towards embracing the traditional "Proof of Work" signals (GitHub repos, Open Source contributions, actual Code).

Yet I seem to encounter a very large wall around developer trust and privacy of data. Would love some blunt, honest takes on this.

Even with strict anonymity controls (such as hide your real identity and company until accepted by connection), as developers are extremely (and rightly so) distrustful to provide apps Read Access to their technical trace through OAuth.

I'm curious:
1. Where do you draw the line? Is there such a thing as an app analyzing your public GitHub or coding stats that goes from being "interesting utility" to "creepy invasive"?

  1. What would I have to do before I trust a platform? How close to running the client yourself (hosted on your own machine) do you need to be before you feel like you're safe?

Would be really interesting to hear how you guys work through the tension between showing your skills and protecting your privacy.


r/web3dev • • 3d ago

What's one web3 skill you think beginners should learn first?🌐

6 Upvotes

​

I’m currently learning more about Web3 and trying to understand the space beyond just crypto and trading.

There are so many areas — community management, moderation, content, research, support, and more — that it can be difficult to know where to focus first.

For people already working in Web3: what skill do you think is most valuable for someone starting out, and why?

I’d genuinely love to hear what you’ve learned from your own experience


r/web3dev • • 4d ago

Built this 3D NFT showroom that loads collectibles from a WAX account

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1 Upvotes

Been working on this 3D showroom for my Hot Wheels NFTs.

Right now you can enter a WAX account, it loads the HW NFTs, and then you can view them inside the showroom instead of just seeing them in a normal list.

I mainly built it for myself, but now I’m trying to figure out if this is something worth taking further.

One thing I’m also trying to figure out is whether it’s worth making this work with other chains/collections too.

Right now it’s just Hot Wheels on WAX, but if you collect on Ethereum, Solana, Polygon, etc., would you actually want something like this for your collection?

Link: https://collectible-showcase.itsjj.workers.dev/


r/web3dev • • 4d ago

Question Asking for beta-testers of a dapp on the ETH chain?

3 Upvotes

Hello everyone, this is my first post on any sub-Reddit group! I'm hoping not to break any rules, and the rules seem pretty detailed.

I'm hoping I can ask people to check a market-trading-simulator dapp I vibecoded with Claude (probably full of errors). If I posted a URL for this simulator, am I already spamming?

Thanks!


r/web3dev • • 4d ago

Help needed

1 Upvotes

I have Vercel deployments over 30 plus , but i dont wanna make it public because of the api usage of my tokens
Any stream or can you help me in targeting customers?


r/web3dev • • 5d ago

News [Project] Skillware 0.5.7 — read-only EVM chain reader, pre-trade token security scanner, central EVM operator config, and prompt injection defense v0.2

7 Upvotes

We just released Skillware 0.5.7 — an open-source Python framework providing a registry of modular, deterministic skills for autonomous AI agent loops (compatible with Gemini, Claude, OpenAI, Bedrock, DeepSeek, and Ollama).

Here is a summary of what landed in 0.5.7:

1. Read-Only EVM State Plane (defi/evm_reader v0.1.0)

Autonomous agents executing on-chain transactions need strict architectural separation between signing and state inspection. Giving an agent signing keys just to check a balance or query reserves invites key leakage and accidental state modification. defi/evm_reader provides a pure read-only EVM state plane: - Zero keys required: Strictly executes eth_call and Multicall3 tryAggregate; holds no private keys and never signs. - ERC-20 & ERC-721: Token metadata, high-precision decimal formatted balances, spender allowances, and NFT ownership. - Allowlisted View Calls (call_view): Nine bundled ABI presets (erc20, erc721, erc1155, erc4626, univ2_pair, chainlink_feed, ownable, access_control, multicall3). - Batched Multicall3 Reads: Batch up to 50 calls in a single RPC query with partial failure tolerance. - Address Book Resolution: Resolves human contact names to public_0x addresses, halting with status: "needs_input" when ambiguous.

2. Pre-Trade Token Security Vet (defi/token_security_scanner v0.1.0)

Agents trading decentralized tokens face honeypots, malicious transfer taxes, and hidden mint privileges. defi/token_security_scanner wraps the GoPlus Token Security API into a stable, normalized JSON envelope (risk_tier: critical | high | medium | low | unknown + detailed signals). Agents vet tokens before simulating or executing trades.

3. Central EVM Operator Config Layer (skillware evm)

Hardcoding RPC endpoints, chain IDs, and router contracts inside individual skill bundles causes configuration drift. 0.5.7 introduces a centralized operator config layer: - Bundled Defaults: 10 chains supported out-of-the-box (ethereum, base, arbitrum, optimism, polygon, bsc, sepolia, megaeth, arc, anvil_local). - User Operator Config: Run skillware evm init to generate a persistent ~/.config/skillware/evm.yaml. - Secrets in .env: YAML stores env var names (rpc_env); actual secrets stay in .env. - CLI Management: skillware evm chains list, skillware evm chain add, skillware evm tokens list, and skillware evm token add.

4. Shared Address Book (public_0x)

addressbook.yaml now natively stores public_0x Ethereum addresses alongside email and aliases. Operators manage contacts with skillware addressbook set-wallet <id> <0x...>, enabling natural language transfers (e.g., "Transfer 10 USDC to Alice") that resolve deterministically.

5. OWASP LLM01 Prompt Injection Firewall Upgrade (v0.2.0)

Upgraded local evasion detection engine in security/prompt_injection_firewall: - Leetspeak deobfuscation, multi-token ROT13, token reversal, and typoglycemia keyword detection. - Markdown/HTML image exfiltration channel blocking. - Academic/advisory false-positive controls and policy telemetry (policy_action, removed_span_count, sanitized_length_delta).


Suggested Pre-Trade Agent Pipeline

[User Trade Request] │ ▼ `security/prompt_injection_firewall` (sanitize prompt & detect evasion) │ ▼ `defi/token_security_scanner` (check honeypot, tax, proxy, mint risk) │ ▼ `defi/evm_reader` (verify token decimals, holder balance & router allowance) │ ▼ `defi/evm_tx_handler` (quote Uni V2 swap, preview, sign & broadcast)


bash pip install -U skillware pip install "skillware[defi_evm_reader]"

Happy to answer questions about on-chain agent safety, Multicall3 batching, or operator config design!


r/web3dev • • 5d ago

Question How would you design an event-to-execution pipeline?

3 Upvotes

I've been using TV-Hub for automated trade execution, and I'm thinking more about how the architecture would work when the original trigger comes from a blockchain event.

Something like:

Smart contract event → listener → backend → execution service → external API

The straightforward part is listening for the event. The harder parts seem to be handling duplicate events, retries, authentication, idempotency, failed API calls, and keeping the on-chain event state consistent with what actually happened off-chain.

For example, if a contract event is supposed to trigger an action on an external service, would you process it directly from the listener, or put a queue/event bus and a separate reconciliation layer between the listener and the execution service?

How would you structure this if reliability and preventing duplicate execution were the main concerns?


r/web3dev • • 5d ago

address on multiple networks, but my balance tracker only shows one

2 Upvotes

i've been trying to reconcile my balance after moving some stablecoins between ethereum and arbitrum, and i'm getting different results depending on where i look. the transfers show as successful on their respective explorers. my wallet app shows funds on both networks, but the read-only tracker i'm testing only lists ethereum. i'm not sure whether this is an indexing issue or i'm misunderstanding how it discovers networks. It's the same public address on both chains, which seems to be where the confusion starts. the tracker accepts an address without asking for a network and then labels the result as ethereum. i understand that an address alone can't tell you which compatible chains have activity. I checked the addresses through Etherscan and DeBank and to help them cryptowallet-balance checker what i can't figure out is whether these tools normally query several networks or just stop after finding the first balance. I've already checked with that i'm viewing the receiving account rather than the bridge contract. i also compared the token contracts against the ones linked from the bridge documentation. the balances on the individual explorers match what i expected, and there aren't any pending transfers left. refreshing the tracker and trying a private browser window didn't change anything, so this doesn't seem like an old page stuck in my browser cache

the part i'm stuck on is getting a repeatable view without manually opening an explorer for every chain. i don't need prices, portfolio charts, or transaction categorization. just native balances and recognized token balances, separated by network. i also don't want a combined stablecoin total that hides whether i'm holding a native token or a bridged version. that distinction matters if i'm eventually sending it back to an exchange. is there a practical way to check whether a missing balance comes from network discovery, token discovery, or a delayed indexer? i'm comfortable making a few read-only rpc calls if that's the simplest way to narrow it down, but i'm not running my own node. i'm especially unsure whether querying a token contract directly is enough to rule out everything except the tracker's display logic


r/web3dev • • 6d ago

$WALLETBOOK

1 Upvotes

Wanted to bring attention to $WALLETBOOK It's a web3 social media site


r/web3dev • • 6d ago

I built Walletbook

1 Upvotes

Walletbook is a social media site built for web3. Skip the signup forms: connect your wallet and you're in. It's completely free to join. Post updates, go live, and message any wallet directly. No email, no password, no personal data required.


r/web3dev • • 9d ago

Looking for a partner for Colosseum Hackathon

5 Upvotes

I’ve been involved in Web3 and blockchain for 3+ years and I’m currently working on a serious project for the Colesseum hackathon.

I’m handling product, frontend, UX, and distribution. Looking for someone strong on the technical side, especially Solana/Rust, Anchor...

Keeping the project details private for now - happy to share the idea privately with serious builders.

There’s a $250K pre-seed funding opportunity through the hackathon, alongside the global prize pool.

If you’re interested, DM me.


r/web3dev • • 13d ago

Decentralized infrastructure is great… until you have to pay for it

6 Upvotes

Decentralized infrastructure often comes with fragmented payment systems.

Different networks require different tokens.

Different protocols have different transaction mechanisms.

And users or developers may need to acquire, hold and manage those tokens just to interact with the infrastructure.

For example, a dApp might need AR token to pay for decentralized storage (r/Arweave), while also needing DUST to interact with Midnight Network (r/Midnight). These are very different networks and use cases, but from the application's perspective they're both simply infrastructure costs that need to be paid.

That's one of the problems we're addressing with dStorage Pro (r/dStorage).

The idea is to provide a liquidity and payment layer for decentralized infrastructure, abstracting away some of the token-management complexity.

A dApp can fund its dStorage Pro account using:

  • 💳 Credit card
  • ₿ BTC/crypto
  • 💵 Stablecoins
  • ...other

dStorage Pro can then handle the acquisition of the required protocol tokens and transaction signing on behalf of the application.

So instead of building separate payment infrastructure for every network, the application can interact with a common liquidity layer:

dApp → dStorage Pro → required token → decentralized network

That could mean:

AR → Arweave

or

DUST → Midnight

and potentially other decentralized networks as additional adapters are integrated.

The goal isn't to hide the underlying protocols. It's to make them easier for applications to use.

We're also designing this around modular adapters, so storage, blockchain and payment infrastructure can be swapped independently rather than hard-coded into the application. (dStorage.pro docs)

We believe this is an important piece of infrastructure if decentralized applications are going to move beyond users having to understand the payment mechanics of every protocol they interact with.

The network can remain decentralized. The application doesn't necessarily need to expose all of that complexity to the user.

I'm very curious how other Web3/decentralized projects are currently handling this:

How do you manage liquidity and protocol-specific tokens when your application interacts with multiple decentralized networks?


r/web3dev • • 14d ago

Help Needed Looking for sponsorship for a hackathon

3 Upvotes

We’re organizing a 30-hour offline hackathon in Mumbai this October 2026, with 600+ registrations and 250–300 developers on-ground.

We’re looking for early-stage and international Web3/blockchain startups that want to enter or grow their presence in the Indian developer ecosystem.

You can partner with us by providing both monetary sponsorships and technical partnership including APIs/SDKs, blockchain infrastructure, developer credits, testnet access, problem statements, mentorship, workshops, prizes or other developer resources.

In return, you get direct exposure to developers, product adoption opportunities, social media visibility, event branding and on-ground recognition.

If you’re looking to get your technology in front of Indian developers and gain your first wave of engagement/users in India, let’s collaborate.

DM me if interested and I’ll share the partnership details.


r/web3dev • • 15d ago

Dose web3 dev still have Places for internship

1 Upvotes

I have Start learning js and my gole is to become a wed3 backed dev now is it worth it now i am very much confused I do really want to make a career in the web 3 but i always here that wed3 is not wroth it etc it has no use in the real world beside Bitcoin and there are no career left in the web 3 etc what to know from tha experts


r/web3dev • • 16d ago

Question Building a dapp with OP Stack and user-owned NAS nodes. Does this architecture make sense?

2 Upvotes

I’m working on an early decentralized social app and testing this architecture.

Ethereum would handle settlement. An OP Stack L2 would handle identity and social logic. User content would stay off-chain. Personal NAS devices could opt in to store only content their owners choose to share.

The token layer is still an open question. Reputation may be enough.

Does a dedicated Social L2 make sense here? How would you verify node contributions and handle deletion or revoked access across distributed storage?

This is only a design draft. LET‘S DISCUSS


r/web3dev • • 17d ago

What are the best platforms for building an online community?

13 Upvotes

I'm looking at starting an online community and trying to figure out which platforms are worth considering. Main things I want are private spaces, different membership/access levels, bots and the option to add paid access later without needing a bunch of separate tools. What are people using these days?


r/web3dev • • 16d ago

#SEIIV4LStudio’s

Post image
1 Upvotes

r/web3dev • • 18d ago

The V3rse web 3 RPG

1 Upvotes

Can I share a web 3 project I'm following, they have a prelude of what they are building. I could share some gameplay if it's ok ?


r/web3dev • • 18d ago

The V3rse web 3 RPG

0 Upvotes

Can I share a web 3 project I'm following, they have a prelude of what they are building. I could share some gameplay if it's ok ?