Firsthand Bitcoin · Data · Bitcoin miners

UTXO set

The number of unspent transaction outputs, the pieces every bitcoin is stored in.

166.42M on Sep 17, 2026.

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.

Unspent outputs (UTXO set), month by month

Month	Unspent outputs (UTXO set)
2025-10	167.70M
2025-11	166.76M
2025-12	166.74M
2026-01	165.21M
2026-02	165.95M
2026-03	166.30M
2026-04	166.55M
2026-05	166.59M
2026-06	167.30M
2026-07	167.50M
2026-08	166.93M
2026-09	166.42M

Questions

What is utxo set today?

166.42M as of September 18, 2026.

How has it changed over the past year?

A year ago it was 169.27M; today it is 166.42M, a change of -1.7%.

What is the highest unspent outputs (utxo set) on record?

189.28M, on December 22, 2024.

How is this chart calculated?

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.

By year

2026 · 2025 · 2024 · 2023 · 2022 · 2021 · 2020 · 2019 · 2018 · 2017 · 2016 · 2015 · 2014 · 2013

Data: CSV · JSON. Embed: <iframe src="https://firsthandbitcoin.com/embed/utxo-set" width="100%" height="420"></iframe>. Free to reuse with a link to this page.

Updated daily. Latest data 2026-09-22.

Network hashrate · Mining difficulty · Difficulty adjustments · Fees paid to miners · Transactions per day · Mempool · Active addresses · Block size and transactions per block · Blocks mined per day · Median confirmation time · Blockchain size · Miner revenue per transaction