Firsthand Bitcoin · Data · Bitcoin miners
The number of unspent transaction outputs, the pieces every bitcoin is stored in.
Unspent outputs (UTXO set) opened 2026 at 167.65M (January 5, 2026) and closed at 166.42M (September 18, 2026), down 0.7%. The high was 167.65M on January 5, 2026 and the low 165.21M on January 27, 2026.
| Month | Month end |
|---|---|
| January 2026 | 165.21M |
| February 2026 | 165.95M |
| March 2026 | 166.30M |
| April 2026 | 166.55M |
| May 2026 | 166.59M |
| June 2026 | 167.30M |
| July 2026 | 167.50M |
| August 2026 | 166.93M |
| September 2026 | 166.42M |
Bitcoin is not stored in accounts but in unspent outputs, each one a lump of coins that a future transaction will spend. The count grows with adoption and jumps during inscription waves, when many small outputs are created.
Other years: 2025 · 2024 · 2023 · 2022 · 2021 · 2020 · 2019 · 2018 · 2017 · 2016 · 2015 · 2014 · 2013
Also in 2026: Bitcoin price · Distance from the all-time high · 200-day and 200-week averages · Network hashrate · Mining difficulty · Difficulty adjustments · Fees paid to miners · Transactions per day · Hashprice · Miner revenue · Miner prices per terahash · Bitmain releases and the bitcoin price