Private Bitcoin transactions, made simple.
Whir is a Bitcoin mixer built on the CoinJoin protocol — combining transactions to break the on-chain link between sender and receiver. Flat 1% fee, no accounts, 24-hour log retention.
Privacy without the marketing layer
Why Whir Mixer.
A focused tool with one job: combine Bitcoin transactions so the chain doesn't trace a clean path from sender to receiver.
CoinJoin protocol
Built on the protocol Gregory Maxwell introduced in 2013. Your input is combined with other users' in a single joint transaction — no clean path from sender to receiver.
Tor-friendly
Dedicated .onion hidden service for users who want network-level privacy on top of on-chain mixing. CoinJoin alone doesn't hide your IP.
No accounts
No email, no password, no identity verification. The only input is a Bitcoin receiving address. Records are removed within 24 hours of completion.
Flat pricing
1% service fee plus 0.0001 BTC network fee. Same for every transaction. No tiers, no surcharges, no dynamic fees, no hidden costs to recompute.
Fast confirmations
Instant mixes complete in 10–20 minutes — mostly the first network confirmation. Delayed mixing (up to 24 hours) increases the anonymity set.
Output splitting
Split the mixed output across multiple receiving addresses with custom percentages. Better anonymity, no extra fee.
Four steps, under fifteen minutes
How Whir Tumbler works.
No setup, no software install. Provide a receiving address, send your Bitcoin, get clean coins back.
Enter receiving address
Provide one or more BTC addresses where the mixed coins should be sent. Optionally choose a delay.
~1 minSend your Bitcoin
Whir generates a unique deposit address. Send between 0.001 and 1 BTC to it from any wallet or exchange.
~2 minCoinJoin runs
After first confirmation, your deposit is combined with other users into a joint CoinJoin transaction.
~10 minReceive clean BTC
Outputs are delivered to your specified addresses. The on-chain link to your sending wallet is broken.
InstantThe protocol
What CoinJoin actually does.
Multiple inputs, multiple outputs, one transaction. No deterministic link between any input and any output.
Inputs
CoinJoin
Outputs
Comparison
Where Whir sits in the ecosystem.
Hosted CoinJoin coordinators differ from wallet-based ones in convenience and trust model. Here's a quick comparison.
| Feature | Whir | Wasabi Wallet | JoinMarket | Generic mixer |
|---|---|---|---|---|
| No wallet install | Yes | No | No | Yes |
| CoinJoin protocol | Yes | Yes | Yes | Varies |
| Flat transparent fee | 1% | Per-round | Variable | Dynamic |
| No KYC | Yes | Yes | Yes | Varies |
| Tor hidden service | Yes | Yes | Yes | Often no |
| Setup time | < 1 min | Chain sync | CLI setup | Fast |
Break the on-chain link in fifteen minutes.
No setup. No account. Just a receiving address and a BTC amount between 0.001 and 1.