Bitcoin · Historical retrospective · 2019
BIP 119 proposed a template-based covenant opcode
BIP 119 describes OP_CHECKTEMPLATEVERIFY, a proposal to let outputs constrain future transactions to a committed template.
Read the briefing →Historical archive · 2019 · 10 briefings
10 original, source-linked historical crypto briefings associated with events or proposals documented in 2019. Articles were published Sep 28, 2026.
Bitcoin · Historical retrospective · 2019
BIP 119 describes OP_CHECKTEMPLATEVERIFY, a proposal to let outputs constrain future transactions to a committed template.
Read the briefing →Bitcoin · Historical retrospective · 2019
BIP 324 specifies an encrypted P2P transport protocol designed to make Bitcoin network traffic less easily classified and tampered with in transit.
Read the briefing →Bitcoin · Historical retrospective · 2019
BIP 84 documents a derivation-path convention for native SegWit P2WPKH accounts.
Read the briefing →Ethereum · Historical retrospective · 2019
Constantinople activated in February 2019, changing gas costs and EVM behavior while reducing the block reward and postponing the difficulty bomb.
Read the briefing →Layer 2 · Historical retrospective · 2019
A rollup must make enough transaction data available for users or independent parties to reconstruct state and challenge invalid behavior.
Read the briefing →Stablecoins · Historical retrospective · 2019
Facebook announced Libra in 2019 as a proposed global payment network using a reserve-backed digital currency design.
Read the briefing →Ethereum · Historical retrospective · 2019
The December 2019 Istanbul fork included EIPs affecting gas pricing, calldata cost and compatibility for smart contracts.
Read the briefing →DeFi · Historical retrospective · 2019
Maker’s Multi-Collateral Dai launch allowed additional collateral types to support Dai issuance beyond the original single-collateral design.
Read the briefing →Layer 2 · Historical retrospective · 2019
Optimistic rollups post state claims that are treated as valid unless someone submits a successful fraud proof during a challenge window.
Read the briefing →DeFi · Historical retrospective · 2019
Synthetix’s protocol design used collateral and debt accounting to support synthetic assets whose values referenced external markets.
Read the briefing →Event or proposal year: 2019. These retrospective articles were first published Sep 28, 2026.