Bitcoin Covenants Part 4: OP_CHECKSIGFROMSTACK and OP_CAT

Bitcoin Covenants Part 4: OP_CHECKSIGFROMSTACK and OP_CAT
CoinKaya Brief

Market News Summary

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.

Original Source Cointelegraph
Published July 13, 2026

Key Points

  • This brief is based on a public crypto market headline from Cointelegraph.
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