# Bitcoin Covenants Part 5: MATT and OP\_CHECKCONTRACTVERIFY — How Bitcoin could carry state across transactions

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1 outlet covering · First listed: Cointelegraph, Nov 11, 2026, 7:26 AM · Read it: <https://cointelegraph.com/research/bitcoin-covenants-part-5-matt-op-ccv>

OP\_CCV embeds contract state directly into Taproot output keys and enforces valid state transitions onchain. This makes it possible to achieve stateful contracts and compact fraud proofs.

## Who's covering it

In the order they published:

- Nov 11, 2026, 7:26 AM: [Bitcoin Covenants Part 5: MATT and OP\_CHECKCONTRACTVERIFY — How Bitcoin could carry state across transactions](<https://cointelegraph.com/research/bitcoin-covenants-part-5-matt-op-ccv>) — Cointelegraph (Specialist)
  OP\_CCV embeds contract state directly into Taproot output keys and enforces valid state transitions onchain. This makes it possible to achieve stateful contracts and compact fraud proofs.