An Ethereum check screens a 0x address against sanctions designations, mixer and bridge trails, drainer and phishing clusters, hacked-protocol proceeds and high-risk venues, and reports whether it sits on the USDT or USDC issuer freeze lists. Free in the Telegram bot, three checks a day, no signup, verdict in seconds. Ethereum carries the deepest stablecoin liquidity, so it is also where issuer-level blocking bites hardest.
Open @sanctuaryapp_bot, paste the address, get the verdict in seconds. Three checks a day, free, no signup.
An Ethereum check reads the account's transfers and the counterparties behind them: sanctions designations, mixing services, drainer and phishing infrastructure, proceeds of named protocol exploits, stolen-funds trails, no-KYC venues, bridges used to move value onward, and the exchanges the money passed through. It also reports issuer-level status for the two stablecoins that matter here — USDT and USDC.
The result is a verdict — CLEAN, LOW, MEDIUM, HIGH, CRITICAL — a recommendation of Proceed, Caution, Review or Reject, and the decision drivers named in words. On Ethereum that naming matters: a wallet that received an airdrop of a worthless scam token is not the same as a wallet that approved a drainer contract, and the reason line separates them.
For sanctions, OFAC lists digital currency addresses as identifiers on the SDN List and defines the terms in FAQ 559; the virtual currency FAQ topic page states the blocking obligation.
An Ethereum address is 0x followed by 40 hexadecimal characters, for example 0x5aAeb6053F3E94C9b9A09f33669435E7Ef1BeAed. The mixed upper and lower case in that string is not decoration: EIP-55 encodes a checksum in the capitalisation, which is how wallets catch a mistyped character. An all-lowercase address is also valid; a mixed-case address with the wrong capitalisation is not, and a good wallet will refuse it.
Two things trip people up:
Both major stablecoins on Ethereum can be blocked by their issuers, and both say so publicly.
Tether's terms allow it to "freeze any Tether Tokens held by you" (Section 2) and, on suspected prohibited use, to freeze or confiscate tokens and "blacklist Digital Token Addresses" (Section 8) — tether.to/en/legal. Circle's USDC terms state that it "reserves the right to 'block' certain USDC addresses" and to "block the transfer of USDC to and from an address on chain as permitted under the blocklisting policy" — circle.com/legal/usdc-terms.
ETH itself has no issuer and cannot be frozen. What ETH meets instead is the venue: an exchange deposit review, a bank question, a broker declining the transfer. The pre-deposit note for Coinbase or Kraken covers what those reviews look like from the user's side.
| What you get | Free check in the Telegram bot | Workspace and API |
|---|---|---|
| Verdict | CLEAN to CRITICAL with the reason named | the same verdict plus the counterparty breakdown |
| Stablecoin status | USDT and USDC issuer freeze lists | the same, across every address you monitor |
| Volume | three checks a day | bulk lists, watchlists, continuous monitoring |
| Evidence | the result in the chat | a signed report you can forward |
| Cost | free, no signup | from $199/mo — see pricing |
Retail and P2P: the Telegram bot, free, three a day. Exchanges and payment flows: the API on every deposit, with review in the workspace.
Send the 0x address to the Telegram bot — three free checks a day, no signup. The verdict comes back in seconds with the reason named. Screening is a read-only lookup: no gas, no signature, no notification to the owner.
Yes, by their issuers. Tether reserves the right to freeze tokens and blacklist addresses in Sections 2 and 8 of its terms; Circle reserves the right to block USDC addresses and to block on-chain transfers to and from an address under its blocklisting policy. ETH itself has no issuer and cannot be frozen.
The string is the same, the history is not. Each network keeps its own balances and transaction record, so a clean result on Ethereum says nothing about the same address on another chain. Screen the network the transfer actually settles on.
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That is the EIP-55 checksum. The pattern of upper and lower case encodes a check over the address, which lets wallets reject a mistyped character before it costs you anything. All-lowercase is valid too; mixed case with the wrong pattern is not.
Substantial exposure to activity compliance teams act on — sanctioned counterparties, mixing services, drainer or exploit proceeds. The recommendation is Review or Reject: do not move value until the source of funds is documented and you are willing to defend the decision.
Send any wallet to the Telegram bot and get a verdict in seconds. Three checks a day, free, no signup. Desks that screen every deposit run it on plans from $199/mo.