Firsthand Bitcoin · Data · Bitcoin miners
Data / Difficulty adjustments / 2019
The size of every bitcoin difficulty retarget, as a percentage.
Difficulty adjustment opened 2019 at +4.72% (January 14, 2019) and closed at +0.56% (December 19, 2019), down 88.2%. The high was +14.23% on July 9, 2019 and the low -7.10% on November 7, 2019.
| Month | Month end |
|---|---|
| January 2019 | -1.18% |
| February 2019 | +0.17% |
| March 2019 | +5.11% |
| April 2019 | -0.63% |
| May 2019 | +11.26% |
| June 2019 | +7.09% |
| July 2019 | -0.56% |
| August 2019 | +1.98% |
| September 2019 | +7.31% |
| October 2019 | +5.25% |
| November 2019 | +1.99% |
| December 2019 | +0.56% |
Each bar is one retarget. Most are small and upward, because hashrate keeps growing. The large negative ones mark the moments miners switched off in numbers: China’s mining ban in mid-2021 produced the biggest cut in bitcoin’s history, −28%.
Other years: 2026 · 2025 · 2024 · 2023 · 2022 · 2021 · 2020 · 2018 · 2017 · 2016 · 2015 · 2014 · 2013
Also in 2019: Bitcoin price · Distance from the all-time high · 200-day and 200-week averages · Network hashrate · Mining difficulty · 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