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THIS DAY IN BITCOIN HISTORY

April 21

Nothing in Bitcoin’s early record is dated April 21. Find the nearest dates with Satoshi’s emails, forum posts and timeline events.

A QUIET DAY

Nothing in the record is dated April 21.

Neither Satoshi’s emails and forum posts nor the timeline has anything on this date. The closest earlier date is April 20. The next is May 11.

SATOSHI ON PROOF-OF-WORK
We consider the scenario of an attacker trying to generate an alternate chain faster than the honest chain. Even if this is accomplished, it does not throw the system open to arbitrary changes, such as creating value…
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