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Real-time on-chain alerts

Blockchain alerts in seconds

An alert within seconds of confirmation, on Telegram today. No code, read-only.

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Free Beta · no card · about two minutes · See example alerts

NFTExample

NFT Bored Ape Yacht Club #8817 minted to 0x7099…79C8

Contract Bored Ape Yacht Club (0xbc4c…f13d) · Rule: BAYC mints

Ethereum · View on Etherscan09:41
What you can watch

Pick what to watch

A wallet, an NFT collection or a smart contract. Start from a template or switch on a ready-made alert; every match is a Telegram message.

You get
WalletExample

Received 1.2 ETH from 0x7099…79C8

Wallet 0xf39f…2266 · Rule: Incoming ETH

Ethereum · View on Etherscan09:41

Wallet alerts

ETH, tokens and NFTs moving in or out of any address, with amount filters so only the big moves reach you.

Start from a template

Or switch on a ready-made alert

All wallet alerts
You get
NFTExample

NFT Bored Ape Yacht Club #8817 minted to 0x7099…79C8

Contract Bored Ape Yacht Club (0xbc4c…f13d) · Rule: BAYC mints

Ethereum · View on Etherscan09:41

NFT alerts

Mints, transfers and Seaport sales on any ERC-721 or ERC-1155 collection, or NFTs entering and leaving a wallet.

Start from a template

Or switch on a ready-made alert

All NFT alerts
You get
ContractExample

0x3f5c…e0b7 paused the contract

Contract 0x87b1…4e2a · Rule: Admin method called

Ethereum · View on Etherscan09:41

Smart contract alerts

Method calls and events, with conditions on any argument.

Start from a template

Or switch on a ready-made alert

All smart contract alertsTokens and DeFi protocols are contracts too: token alerts, DeFi alerts.
Live feeds

Follow what we watch

Free live feeds of every USDT and USDC mint, burn and frozen address, and every transfer out of the Ethereum Foundation's wallets, posted the moment they are confirmed. No sign-up.

USDT and USDC mints
MintExample

1,000,000,000 USDT

Tether minted 1,000,000,000 USDT

Ethereum · USDTIssue
USDT and USDC burns
BurnExample

300,000,000 USDT

Tether burned 300,000,000 USDT

Ethereum · USDTRedeem
USDT and USDC blacklist
FreezeExample

0x3C44…93BC

0x3C44…93BC was blacklisted by Tether (USDT frozen)

Ethereum · USDTAddedBlackList
Ethereum Foundation wallet
SentExample

10,000 ETH

0x7099…79C8

EF Treasury sent 10,000 ETH to 0x7099…79C8

Ethereum · ETHETH transfer
All live feeds
How it works

Live in two minutes

Three steps, no code and no dashboard to keep open. Set a rule once and get on with your day.

  1. 01

    Pick what to watch

    Paste a wallet, collection or contract address. Watching is read-only: you only share a public address.

    Read-only
  2. 02

    Choose what matters

    Start from a template such as NFT mints, incoming payments or token approvals, and tune its conditions.

    No code
  3. 03

    Get the alert

    Link a Telegram DM or group. Each match arrives in plain words with an Etherscan link, within seconds of confirmation.

    Within seconds
Security

Read-only. Nothing to hand over.

Alerts on Chain reads the public blockchain and writes to your Telegram. That is all it can do.

Only public data
Alerts watch the public on-chain activity of the addresses you paste, yours or anyone else's.
Your wallet is your login
Signing in is one signed message, like a password. It is not a transaction and costs no gas.
No keys, ever
We never ask for a private key or a seed phrase, and nothing on this site can move funds.
Read the privacy policy
Pricing

Pricing that starts free

Beta is free with no card. Paid tiers start with Personal at $5/month; slide right as your volume grows. Every step includes wallet and contract rules.

Monthly event budget
5,000events / monthPersonalRecommended
BetaBusiness
Events / month5,000
Watched wallets100
Watched contracts50
Delivery
Telegram
Coming with Premium
DiscordSlackEmailWebhooks

A transaction on a watched wallet = 1 event · on a watched contract = 1 event · limits reset monthly

An event is one transaction seen on one watched address. It counts once, whether it matches none, one or several of your rules and however many channels it fans out to. An alert is sent only when a rule matches.

$4/month

Billed annually — 2 months free

Cancel any time. Change step without losing a rule.

FAQ

Frequently asked questions

Short answers about networks, NFTs, speed, limits and private keys.

Read the full FAQ

Getting started

More questions about getting started in the full FAQ

Ethereum mainnet today. More networks are coming with Premium.

Yes. Watch any ERC-721 or ERC-1155 collection for mints, burns and transfers, follow Seaport sales, or get an alert when an NFT enters or leaves a wallet. Sale prices, floor prices and rarity are coming with Premium.

Alerts are sent within seconds of a transaction being confirmed on the blockchain. Alerts on Chain reacts to new blocks as they're confirmed so you get real-time notifications.

Pricing & limits

More questions about pricing & limits in the full FAQ

The free Beta plan watches 1 wallet and 1 contract. Every paid tier (Personal, Starter, Basic, Plus, Growth, Scale, Pro, Business) watches up to 100 wallets and 50 contracts; tiers differ only in their monthly event allowance.

Security & privacy

More questions about security & privacy in the full FAQ

No, we never ask for or store private keys. We only need the public wallet address to watch its transactions. Watching is read-only: we can see what an address does on-chain, but we can never move its funds.

Set up your first alert in two minutes

Free while in beta. No card, no code, no private keys.

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