On-chain wallet tracker

Budget: 27000 UAH Deadline: 6 days

Hello. I am implementing a multi-chain backend monitoring system in Python (Asyncio / WebSockets / RPC nodes) for Solana, BSC, and ETH.

For Solana, I will use RPC/WebSockets with connection caching, and for EVM (BSC/ETH) — Web3.py. I will implement tracking of incoming transactions (native + USDT/USDC) with TTL calculation and filtering by the number of tx (≤ 5) and volume (≥ $10k). The blacklist of CEX/DEX routers and filtering parameters will be placed in a separate YAML/JSON config with hot-reload updates. For monitoring outgoing purchases on Raydium, Pump.fun, Uniswap, and PancakeSwap, I will connect log parsing of the contract, and notifications will be generated in parallel via Telegram Bot API and Pushover with direct links to DexScreener/GMGN.

I have experience in developing WebSocket trackers in Solana with custom filtering and token scoring.

Budget: 26460 UAH Deadline: 7 days

Hello, I have created a similar backend for monitoring on-chain transactions in Solana, BSC, and Ethereum: filtering incoming transfers native + USDT/USDC by amount and number of transactions, a dynamic Watchlist with fresh wallets, a blacklist of CEX/bridges/DEX routers, and instant alerts in Telegram with the hash and link. Extracting filtering parameters and wallet TTL into configuration and bot commands was also part of that project.

If you catch early buys through Pump.fun and Raydium, it’s worth adding deduplication of alerts by wallet right away, as it removes about 30-40% of the noise from repeated swaps.

How many wallets do you expect in the Watchlist at the start, and what do you use to read the chain, public RPCs or paid nodes like Helius/QuickNode?

I suggest we get in touch; I will also draft a service scheme for your three networks with filtering and alert logic, and you can see it live.

Budget: 10000 UAH Deadline: 7 days

I have experience in developing similar on-chain monitoring services.

Stack: Python (asyncio) + web3.py + solana-py, PostgreSQL, Redis.

What I will do:

Real-time monitoring of transactions via WebSocket (Solana, ETH, BSC) — native coins + USDT/USDC
Filtering by amount, number of tx, wallet age - all parameters in config
Watchlist with automatic addition + TTL
Blacklist (CEX, bridges, routers, DEX contracts + manual addition)
Detection of purchases through DEX: Uniswap V2/V3, PancakeSwap, Raydium, Pump.fun, Jupiter
Alerts in Telegram + Pushover (hash, amount, address, links to DexScreener/GMGN)
Telegram bot with commands for managing watchlist/blacklist/config Expand

Budget: 10000 UAH Deadline: 7 days

Good day.
I have already written similar scripts, only for monitoring prices on DEXs. I can implement it in Python with monitoring events in blocks for transfers and swaps.
One thing - messages in Telegram have a limit, which is clearly less than the number of swaps in a block across three networks, so I will have to think about how to group them or choose another notification option.

Budget: 15000 UAH Deadline: 12 days

Hello! I have extensive experience in developing backend services in Python (FastAPI/Flask), integrating with blockchain APIs, and creating Telegram bots with real-time monitoring. Your online wallet tracker project is exactly what I regularly do.

I can implement:
• On-chain transaction filtering for Solana, BSC, Ethereum via RPC/index APIs
• Dynamic watchlist + blacklist management with config-based filtering
• Monitoring DEX activity and detecting purchases of new tokens
• Telegram + Pushover alert system with formatted output and links
• Scalable architecture for processing transaction streams

Timeline: 1–2 weeks depending on the complexity of DEX integrations. Ready to discuss details. Looking forward to your response!

Budget: 19000 UAH Deadline: 14 days

You need a backend service that tracks incoming transactions on the Solana, BSC, and Ethereum networks, filters fresh wallets by amount and number of transactions, and immediately notifies via Telegram. I work with Python and Node.js, so I will implement the filtering logic, dynamic Watchlist and Blacklist, and move all parameters to the config and bot commands. I will set up monitoring of token purchases through DEX and send alerts to Telegram and Pushover with the hash, amount, address, and links. Scraping and process automation are part of my work, so I will gather data from the necessary sources into a convenient flow. I suggest starting with a working prototype of the monitoring, and we will agree on the filtering criteria together. Write to me, and we will discuss the details.

Budget: 3200 UAH Deadline: 3 days

An on-chain tracker for fresh wallets with filters for amount and number of transactions is a task for continuous monitoring, not a one-time script.

I will create a backend in Python (web3.py, solana-py) with nodes for Ethereum, BSC, and Solana: a filtering module based on configuration (amount, TTL, number of in/out), a watchlist with auto-refresh, and a blacklist for CEX, bridges, and routers. Purchases through Uniswap, PancakeSwap, Raydium, Pump.fun will be captured from swaps, with alerts in Telegram and Pushover containing links to DexScreener/GMGN.

I am ready to deliver in 3 days. Which networks are a priority to start with?

Budget: 3600 UAH Deadline: 3 days

The task is clear: monitor incoming transactions on Solana, BSC, and Ethereum, filter wallets by amount and number of transactions, maintain a watchlist/blacklist with TTL.

I will do this using RPC/WebSocket subscriptions across the three networks, parsing USDT/USDC, a separate Buying Activity module for DEX swaps (Uniswap, PancakeSwap, Raydium, Pump.fun), alerts in Telegram and Pushover with links to DexScreener/GMGN.

Question: Is the blacklist for CEX/bridges already prepared, or should I compile it myself? The estimated timeframe is about 3 days.

Budget: 8000 UAH Deadline: 45 days

I already have a practically ready similar solution for on-chain monitoring - we can quickly adapt and launch it, I suggest we discuss it now, I am available (:

Do you need your own nodes or will managed RPC and indexers for Solana, BSC, and Ethereum be sufficient?

How should the purchase of tokens through aggregators and multi-step exchanges be interpreted in the first version?

A similar architecture SaaS with external integrations and automation - https://business.ingello.com/ua/vorfahr

An automation platform with complex event processing and rules - https://business.ingello.com/ua/fractal

Main landing page - https://systems-fl.ingello.com/ua Expand

Budget: 4500 UAH Deadline: 14 days

Hello! I am ready to develop an asynchronous backend in Python (FastAPI) for multi-chain monitoring of Solana, BSC, Ethereum via RPC. I will implement filtering of "fresh" wallets by volume and transaction count, a dynamic watchlist/blacklist in Redis/PostgreSQL, and instant alerts in Telegram/Pushover with links to DexScreener/GMGN.

I have experience in creating high-load blockchain indexers and integrating with DEX APIs (Uniswap, Raydium, Pump.fun) for real-time swap tracking.

What RPC providers or private nodes do you plan to use for each network, and is there access to GMGN/DexScreener API for data enrichment?

Budget: 2500 UAH Deadline: 14 days

Volodymyr, hello. The task is clear: a backend is needed that listens for new transactions on Solana, BSC, and Ethereum, filters by amount and wallet tx count, maintains a watchlist/blacklist, and sends alerts to Telegram and Pushover with links to DexScreener or GMGN.

Architecture: separate workers for each network (RPC or third-party indexers like Alchemy/Helius for speed), a shared event queue, PostgreSQL for watchlist/blacklist and wallet statistics (TTL, number of in/out tx). Filters and thresholds will be moved to configuration or bot commands so they can be changed without redeploying. The Buying Activity Monitor will be implemented as a separate module that listens for outgoing tx from the watchlist and parses swaps through Uniswap/PancakeSwap/Raydium/Pump.fun by router addresses and method signatures. Alerts will be generated through a single notifier with two sending channels.

Initially, I will create an MVP on one or two networks with basic filtering and alerts, then expand to the rest and add the buying monitor. The timeline for full functionality across three networks with a blacklist and complete alerting: 14 days.

Question: are there already ready RPC/indexers (own nodes, Alchemy, Helius) or do they need to be selected and paid for separately?

Budget: 3500 UAH Deadline: 7 days

I will create a reliable on-chain tracker for you that monitors fresh wallets in Solana, BSC, and Ethereum, filters by specified criteria, maintains a watchlist/blacklist, and instantly notifies via Telegram and Pushover. I have experience in Web3 (worked with Solana, EVM, DEX), Python, and asynchronous services. I will implement everything from monitoring entries to tracking purchases through DEX, with a flexible configuration. Deadline — 7 days, price — 3500.

Budget: 4500 UAH Deadline: 7 days

Hello! For quick tracking of Solana, a gRPC connection (Shyft/Helius) is needed because regular RPCs are too slow. I have experience implementing similar monitoring in Node.js and Python.

What RPS limits are expected from Telegram/Pushover during peak loads?

Let's discuss the queue architecture in the chat.