~/talk

Integrating Lightning and Utreexo, a study case

Talkat bitcoin++ Berlin 2025, lightning edition · 2025-10-02..10-04· [bitcoin, web3]
slides:none on file

Utreexo uses a dynamic accumulator built from a forest of microtrees so channel outpoints are provable with tiny, less than 1 kilobyte roots and logarithmic-size proofs; a full block of UTXO proofs compresses to about 1 MB. Integration options are a protocol-change approach where nodes keep a partial forest and serve batchable proofs, or a permissioned file/LSP approach that needs no spec changes. A lightweight client prototype runs in about 300 MB disk 200 MB RAM, syncs day-to-day wallets in minutes and scaled rescans hit ~40 minutes.

AI-written summary · about

  1. 0:00UTXO and Utreexo intro
  2. 1:06Lightning with Utreexo
  3. 3:13Utreexo accumulator
  4. 5:20Utreexo micro trees
  5. 8:13Efficient proof updates
  6. 10:42Partial forest storage
  7. 12:50Correct Lightning integration
  8. 16:23UTXO proofs with ZK
  9. 17:49Utreexo Express Sync
  10. 19:59LSPs in Utreexo Lightning
  11. 21:26Mobile Lightning benefits
  12. 23:35Q&A
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