Fourth Halving

Block reward drops from 6.25 BTC to 3.125 BTC at block 840,000.

BTC Price

$64,000

Block

#840,000

Importance

94/100

Hardware

Antminer S21

The fourth halving reduced the subsidy to 3.125 BTC. Price was ~$64,000 — higher at the halving than the previous cycle's peak, a first in Bitcoin history. Runes protocol launched simultaneously.

What else happened around this time?

May 11, 2020HalvingsLegendary

Third Halving

Block reward drops from 12.5 BTC to 6.25 BTC at block 630,000.

BTC $8,600#halving-3

April 20, 2024ProtocolMajor

Runes Protocol Launches at Halving

Casey Rodarmor launches fungible tokens on Bitcoin at block 840,000.

BTC $64,000#runes#tokens

November 23, 2023SecurityMajor

Record $3M Transaction Fee Mistake

A user paid 83.65 BTC in fees to move 55.77 BTC — the largest dollar fee ever.

#fee#user-error

January 10, 2024GovernmentEpoch

SEC Approves Spot Bitcoin ETFs

11 spot Bitcoin ETFs approved simultaneously — the most significant regulatory event in Bitcoin history.

BTC $46,000#etf#sec