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A good help to understand how ring signatures work in monero is to use Monerovis.com blockchain explorer for monero. Click on any transaction, then select any of they decoy inputs which will take you to the transaction where this utxo was originally created. Click this output pubkey to view the decoy map. This Might not be related to your question Directly , but will help you understand the current structure and tracebillity.

Monero blockchain explorer by Cake Wallet—look up blocks, transactions, and the mempool with a privacy-minded, open-source tool.

## The Hook I'd read about blockchains plenty. Reading an explorer, querying past data — that felt familiar, like querying any other database. Subscribing to a live node and reacting to blocks _as they happen_ was a completely different feeling, and I didn't fully get why until I built it. This week, for **Web3 Shield** (an open-source project I'm building to practice backend and security fundamentals — not because I'm an expert in any of this), I got a first real-time pipeline working. Sharing what I learned, not claiming I did it the "right" way. ## Step 1: A Sandbox to Learn On Before touching a real network, I forked **Base** (Coinbase's L2) locally using **Anvil** , from the Foundry toolchain. Real chain state, no gas cost, and — this mattered a lot for someone still learning — no fear of breaking anything real: client, err := ethclient.Dial("ws://127.0.0.1:8545") if err != nil { log.Fatalf("🚨 Erro ao conectar no Anvil: %v", err) } ## Step 2: Learning the Difference Between Asking and Listening My first instinct, honestly, would've been to poll — ask "any new blocks?" on a timer. Turns out there's a better way: subscribe, and let the node push updates to you. headers := make(chan *types.Header) sub, err := client.SubscribeNewHead(context.Background(), headers) if err != nil { log.Fatal(err) } `SubscribeNewHead` gives back a channel, and a new `*types.Header` shows up on it every time a block gets mined. No wasted requests, no guessing. ## Step 3: The Part That Took Me a Minute to Understand The subscription can die on you — node restarts, network hiccups — and I needed to know when that happens without spinning up a second thread just to watch for it. This is where Go's `select` finally clicked for me: for { select { case err := <-sub.Err(): log.Fatal("🚨 Erro na inscrição:", err) case header := <-headers: block, err := client.BlockByHash(context.Background(), header.Hash()) if err != nil { continue } // ...process block } } One goroutine, one `select`, two channels. I'd read about this pattern before starting, but it didn't really mean anything until I watched it hold a live connection open and react to real blocks landing. ## Step 4: Finding the Signal I Didn't Know Existed For every transaction, I pull out the hash, the destination address, and something I'd never worked with before — the **function signature** : the first 4 bytes of the call data, which apparently tell you which contract function is being invoked, before the transaction is even confirmed. toAddress := "" if tx.To() != nil { toAddress = tx.To().Hex() } txData := tx.Data() funcSig := "0x00000000" // plain ETH transfer, no calldata if len(txData) >= 4 { funcSig = "0x" + hex.EncodeToString(txData[:4]) } I didn't know this signal existed before this week. Now it's the whole reason this project might eventually be useful for something. ## Step 5: Not Losing Data When Things Repeat insertQuery := ` INSERT INTO raw_transactions (tx_hash, to_address, function_signature) VALUES ($1, $2, $3) ON CONFLICT (tx_hash) DO NOTHING;` `tx_hash` is unique, and `ON CONFLICT DO NOTHING` means reprocessing a block twice isn't a crash — it's a no-op. Small thing, but it's the kind of detail I wouldn't have thought about before actually hitting it. ## What I Deliberately Didn't Build Yet No scoring, no "this looks suspicious" logic — this piece only captures data, correctly and without duplicating it. Deciding what's actually risky is a problem for a future post, once I've learned enough to attempt it. ## What's Next I'm going to try wiring in a Python service to read this raw data and actually attempt a risk score. I have no idea yet how much of my plan survives that. ## Let's Discuss! 👇 If you've built something like this before — a live chain listener — what's the thing you wish someone had told you before you started? I'm early enough that I can still design around it. # golang #blockchain #beginners #learninpublic

Blockstream Explorer is an open source block explorer providing detailed blockchain data across Bitcoin, Testnet, and Liquid. Supports Tor and tracking-free.

ACI SmartTrader is an AI-powered trading platform building a secure, open-source network for decentralized AI.Join the ACI community to follow the development, complete missions, earn XP, and help sha...

The most popular and trusted Bitcoin block explorer and crypto transaction search engine.

Etherscan is the most widely used Ethereum blockchain explorer. It turns raw on-chain data into searchable records of transactions, wallets, smart contracts, and gas costs. Most people encounter Etherscan for the first time when a transaction takes longer than expected…

Probably no, right? That would be very dangerous, especially if the phishing website serving it is an exact copy of the thing you was looking for. Well that's what happened to me! TL;DR I found a fake tronscan blockchain explorer duplicate on the #1 position in the search results.

Track live market cap, volume, dominance and sentiment, discover trending projects and breaking news, and explore the complete crypto ecosystem with Nektak.

Track live market cap, volume, dominance and sentiment, discover trending projects and breaking news, and explore the complete crypto ecosystem with Nektak.

A practical article about Jaxx Liberty as a cross-platform blockchain wallet with portfolio tools, exchange access, and block explorer features for daily crypto management.