Bitcoin · Historical retrospective · 2012
BIP 21 proposed a common way to encode Bitcoin payment requests
BIP 21 specifies a URI format for bitcoin payment links, including an address and optional amount or label fields.
Read the briefing →Historical archive · 2012 · 4 briefings
Crypto milestones in 2012
4 original, source-linked historical crypto briefings associated with events or proposals documented in 2012. Articles were published Sep 28, 2026.
Bitcoin · Historical retrospective · 2012
BIP 32 introduced hierarchical deterministic wallet trees
BIP 32 describes deriving many public and private keys from a master seed through a structured hierarchy.
Read the briefing →Bitcoin · Historical retrospective · 2012
Bitcoin’s 2012 reward reduction put its issuance schedule into practice
The 2012 block-subsidy reduction was the first live test of Bitcoin’s rule that new issuance declines at fixed block intervals.
Read the briefing →Bitcoin · Historical retrospective · 2012
Bitcoin’s first subsidy halving changed the issuance schedule
At block 210,000, Bitcoin’s block subsidy fell from 50 BTC to 25 BTC under the protocol’s programmed issuance schedule.
Read the briefing →Event or proposal year: 2012. These retrospective articles were first published Sep 28, 2026.