Whir review (2026)

Whir is built on CoinJoin. Lets you set a mixing delay of up to 2 days to strengthen privacy. Base fee is 1%, and it can be raised to 3% for a higher privacy level.

The size of the anonymity set — how many other participants your coins are pooled with — is what actually breaks the on-chain link. A mixer using CoinJoin spreads your output across many indistinguishable ones, so chain-analysis heuristics such as common-input-ownership stop producing a confident match.

The service fee is 1–3%. On top of it you always pay the Bitcoin network (miner) fee for the outgoing transaction, which depends on mempool conditions rather than on the mixer.

Compare the total cost against what you are protecting: a fee measured in a fraction of a percent is cheap insurance for a business payout, but expensive relative to a very small transfer. Where a mixer offers randomised or tiered fees, the randomisation itself is a privacy feature — a constant fee percentage is a fingerprint an analyst can filter on.

Typical processing time is Up to 2 days, and Tor support is: Yes. Time separation between deposit and withdrawal defeats naive timing correlation, so pick the longest delay your situation tolerates rather than the fastest option.

Tor matters just as much as the on-chain side. Without it, the IP address that requested the mix, the browser fingerprint and the timing of your visit all remain linkable metadata — the chain may be clean while the request log is not.

Verify the domain or onion address from a source you already trust, never from a search advert. Save the letter of guarantee or the signed statement the service issues at deposit time — it is your only proof of the agreed terms.

Run a small test amount first, use a freshly generated receiving wallet, never reuse addresses, and split large sums across several rounds. Mixing does not launder provenance and does not make an illegal transaction legal; it removes the public link between your addresses.