Ask/Knowledge Atlas/Hashcash
Pre-Bitcoin · 1997

Hashcash

Hashcash is Adam Back’s proof-of-work system originally designed to deter email spam by requiring computational work.

Context

Why it matters

Bitcoin adapted proof of work into a consensus and issuance mechanism.

Canonical knowledge

What California Bitcoin maintains

  • Hashcash is Adam Back’s proof-of-work system originally designed to deter email spam by requiring computational work.

Primary and technical sources

Evidence before assertion
Hashcash

Adam Back

Tier 1 · primary

Related concepts

Continue through the knowledge graph
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https://californiabitcoin.org/api/agent/v1/topic/hashcashhttps://californiabitcoin.org/api/agent/v1/search?q=Hashcashhttps://californiabitcoin.org/api/agent/v1/coveragehttps://californiabitcoin.org/api/agent/v1/sources