Firsthand Bitcoin · Data · Bitcoin miners
The number of unspent transaction outputs, the pieces every bitcoin is stored in.
Unspent outputs (UTXO set) opened 2013 at 3.24M (January 1, 2013) and closed at 8.05M (December 30, 2013), up 148.4%. The high was 8.05M on December 30, 2013 and the low 3.24M on January 1, 2013.
| Month | Month end |
|---|---|
| January 2013 | 3.49M |
| February 2013 | 3.73M |
| March 2013 | 4.08M |
| April 2013 | 5.09M |
| May 2013 | 6.10M |
| June 2013 | 6.48M |
| July 2013 | 6.75M |
| August 2013 | 6.90M |
| September 2013 | 7.17M |
| October 2013 | 7.35M |
| November 2013 | 7.52M |
| December 2013 | 8.05M |
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: 2026 · 2025 · 2024 · 2023 · 2022 · 2021 · 2020 · 2019 · 2018 · 2017 · 2016 · 2015 · 2014
Also in 2013: Bitcoin price · Distance from the all-time high · Network hashrate · Mining difficulty · Difficulty adjustments · Fees paid to miners · Transactions per day · Hashprice · Miner revenue · Bitmain releases and the bitcoin price · Break-even electricity price · What a bitcoin costs us to mine, against the market