Bitcoin Covenants Part 4: OP_CHECKSIGFROMSTACK and OP_CAT
OP_CSFS authenticates signatures over arbitrary data. OP_CAT concatenates stack values into a single message. Together, they let Bitcoin scripts verify transaction structure at spend time, without pre-signed key management or new consensus rules beyond the two opcodes themselves.
Bitcoin Covenants Part 4: OP_CHECKSIGFROMSTACK and OP_CAT
OP_CSFS authenticates signatures over arbitrary data. OP_CAT concatenates stack values into a single message. Together, they let Bitcoin scripts verify transaction structure at spend time, without pre-signed key management or new consensus rules beyond the two opcodes themselves.
When you are ready to buy with escrow protection and NFC verification, browse the official-brand catalog. LAIZ Shop lists official brands only — no grey-market listings.
Shop the story
Verified picks related to this topic
More from LAIZ Headlines
LAIZ HeadlinesU.S., UK move to align rules for tokenized finance across world's largest financial markets
The joint roadmap aims to reduce regulatory friction for tokenized assets while strengthening ties between the world's two largest financial centers.
LAIZ HeadlinesCleanSpark shares jump 22% after $6.6B Georgia data center lease
The Bitcoin miner’s Georgia agreement with an undisclosed investment-grade technology company expands its footprint in AI and high-performance computing infrastructure.
LAIZ HeadlinesAnchorage Digital expands Tron support with institutional TRX staking
Institutions can now stake Tron's native token directly from Anchorage's custody platform as the company expands support for one of the largest USDT settlement networks.