A Bitcoin Calendar System

Stephen Perrenod
Published in
5 min readSep 26, 2019

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Today is Block Year 12, and within the year it is Block Month 5, Block Day 134

Bitcoin Generates Its Own Calendar

Our Gregorian calendar is based on the Solar year, the Lunar month, and the Terrene (Earthly) day. Bitcoin has its own natural calendar that can be constructed to approximate our human calendar of years, months, and days.

But the details are a bit different, and since Bitcoin is a dynamic process built around the construction of blocks, block count, not regular calendar time, is the most relevant and precise way of looking at the passage of time in the Bitcoin context.

Bitcoin’s fundamental process driver is the construction of a chain of blocks. Blocks are created one at a time and chained together in a time chain, or blockchain. That process and the ever-growing chain drives Bitcoin’s security and its value. The value comes both from security and scarcity, and the money supply is created on a per-block basis, via a block reward for the winning miner.

The block count is the clock. It is the system’s heartbeat. Bitcoin has its own clock that has a rough correspondence with wall clock time. Yet it has its own cycles, years, months and days of somewhat different and…

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Stephen Perrenod
The Dark Side

supercomputing expert, astrophysicist, technology analyst, orionx.net, author of DarkMatter, DarkEnergy, DarkGravity