Explore / Software

Bitcoin node software versions

User agents reported during successful handshakes. These strings describe reachable observations and can be customized or spoofed; they do not establish software integrity, voting power or consensus support.

Reachable records
3,700
Core-style user agents
3,365

Satoshi prefix, excluding Knots strings

Knots-labelled user agents
318

String contains Knots

Other or unknown
17
Self-reported user agents among reachable node records
User agentReachable nodesShare
/Satoshi:27.0.0/1,01227.35%
/Satoshi:31.0.0/37610.16%
/Satoshi:31.1.0/2998.08%
/Satoshi:25.1.0/2135.76%
/Satoshi:28.1.0/1925.19%
/Satoshi:30.2.0/1634.41%
/Satoshi:25.0.0/1313.54%
/Satoshi:29.3.0/Knots:20260508/1233.32%
/Satoshi:30.0.0/1062.86%
/Satoshi:29.0.0/1012.73%
/Satoshi:28.1.0(FutureBit-Apollo-Node)/832.24%
/Satoshi:28.0.0/701.89%
/Satoshi:27.1.0/661.78%
/Satoshi:29.1.0/641.73%
/Satoshi:29.3.0/Knots:20260507/421.14%
/Satoshi:26.0.0/411.11%
/Satoshi:29.2.0/381.03%
/Satoshi:24.0.1/350.95%
/Satoshi:22.0.0/340.92%
/Satoshi:29.3.0/310.84%
/Satoshi:25.1.0(FutureBit-Apollo-Node)/260.70%
/Satoshi:0.20.0/250.68%
/Satoshi:29.2.0/Knots:20251110/210.57%
/Satoshi:29.3.0/Knots:20260210/190.51%
/Satoshi:23.0.0/170.46%
/Satoshi:31.99.0/170.46%
/Satoshi:0.21.1/160.43%
/Satoshi:29.4.0/150.41%
/Satoshi:29.4.0/Knots:20260508/150.41%
/Satoshi:28.1.0/Knots:20250305/130.35%
/Satoshi:29.4.1/Knots:20260508/130.35%
/Satoshi:26.2.0/120.32%
/Satoshi:0.18.0/110.30%
/Satoshi:29.1.0/Knots:20250903/110.30%
/Satoshi:0.21.0/90.24%
/Satoshi:27.2.0/90.24%
/Satoshi:29.3.0/Knots:20260210+bip110-v0.4.1/UASF-BIP110:0.4/90.24%
/Satoshi:31.0.0(FutureBit-Apollo-Node)/90.24%
/Satoshi:28.2.0/80.22%
/Satoshi:29.3.0/Knots:20260210+bip110-v0.3/UASF-BIP110:0.1/80.22%
/Satoshi:0.20.1/70.19%
/Satoshi:0.17.1/60.16%
/Satoshi:27.1.0/Knots:20240801/60.16%
/Satoshi:29.2.0(FutureBit-Apollo-Node)/Knots:20251110/60.16%
/Satoshi:30.1.0/60.16%
/Satoshi:22.0.0(FutureBit-Apollo-Node)/50.14%
/Satoshi:25.99.0/50.14%
/Satoshi:29.2.0(FutureBit-Apollo-Node)/50.14%
/Satoshi:29.2.0/Knots:20251110+bip110-v0.1/UASF-BIP110:0.1/50.14%
/Satoshi:30.3.0/50.14%

Latest observation or check: . This is a dataset activity timestamp, not the check time of every row.

Reading version distribution

A node may report a familiar software name while using a modified build. Addresses also do not correspond one-to-one with independent operators. This table is an observation of protocol strings, not a count of people choosing a policy.

Unknown strings stay in the denominator. Selecting a user agent opens the reachable node list with a text filter; text searches may also match longer strings. No individual user-agent pages are generated.

An observed view from our crawler's vantage point, not a complete census. Reachable means a successful Bitcoin P2P handshake. IP geolocation is approximate. How Atlas measures the network.

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