Pepecoin Hashrate Migration
how it’s computed →
Every Pepecoin block retargets difficulty, so each block leaves a step r = ln(D_i/D_{i−1}). Under steady hashrate the steps are near-independent and zig-zag; when hashrate is arriving or leaving they keep the same sign for hours. The meter is the lag-1 autocorrelation of the last 240 steps × √240 — under the constant-hashrate null that is a standard normal, so the σ scale is exact, not fitted.
Beside it the page shows the 4-hour mean-difficulty change against this chain’s own typical 4-hour move, measured over our archive — so a large but ordinary swing is not mistaken for a sustained one.
r_i = ln(difficulty_i / difficulty_{i-1}) per block; AC1 = lag-1 autocorrelation of r over the last 240 blocks (about 4 h at a 60 s target); sigma = AC1 x sqrt(240), because under constant hashrate the r_i are near-independent and AC1 ~ N(0, 1/240); net_4h = mean difficulty of the last 240 blocks vs the prior 240; typical_4h = the spread of that ratio over our own archive (not a Poisson figure — hashrate itself wanders)What hashrate migration is
Hashrate migration is the persistence of Pepecoin’s per-block difficulty steps — a run of steps in one direction that block luck alone would not produce — read as mining power arriving at or leaving the chain. Pepecoin retargets every block (DigiShield, Dogecoin-1.14 class): every block moves difficulty by the damped ratio of the last interval to the 60-second target, so a chain whose hashrate is steady zig-zags around its level block by block, and a chain whose hashrate is moving steps the same way for hours.
Whose power moves on Pepecoin
On Pepecoin the power that moves is parent-pool power: PEP is merge-mined under Litecoin parent pools, so a “moving” reading here usually means a parent roster added or dropped PEP, not that PEP-side machines were switched on or off. In our dated attribution study (2026-10-02 → 2026-10-10), F2Pool 30.3%, ViaBTC 26.5% and AntPool 20.1% of PEP blocks carried those tags. In most LTC merge rosters PEP is the default second kicker after BELLS.
Ordinary swings on this chain
The typical 4-hour move for Pepecoin — ±10.2% in mean difficulty as of 2026-10-31 — is shown next to the live 4-hour change so a reader can tell a large but ordinary swing from a sustained one. On a 1,440-block-a-day chain a 4-hour window is 240 blocks, which is why the meter’s null distribution is N(0, 1/240) and why the σ scale needs no calibration.
FAQ
- Why does Pepecoin qualify for this meter when Litecoin does not?
- Pepecoin retargets every block (DigiShield), so each block leaves a difficulty step whose direction can be tested for persistence. Chains that retarget in epochs — Bitcoin, Litecoin, Namecoin — step once per epoch, and the meter is undefined between steps; for them the next-adjustment band is the equivalent instrument.
- What does quiet mean here?
- That the last 240 difficulty steps zig-zag the way luck alone would: the lag-1 autocorrelation of ln(D_i/D_i-1) is within 3 standard deviations of zero under the constant-hashrate null, whose variance is 1/240. It does not mean difficulty was flat — a 10.2% swing in the 4-hour mean is ordinary on Pepecoin.
- Is this the Difficulty Ribbon?
- No. The Difficulty Ribbon is a market-facing indicator built from moving averages of difficulty. This meter uses no market data and no moving average: it tests whether consecutive per-block retargets on Pepecoin keep the same sign longer than chance allows.