The BCH Podcast
Discussion of proposed BCH '25 "Targeted VM Limits" upgrade, with prominent BCH developer & CHIP author Jason Dreyzehner. We get into the historical context, rationale, and details of VM Limits. We also discuss BigInts, CashTokens retrospect, LibAuth, ZCEs, Looping and more. Enjoy, and please share your thoughts in the comments.
Links:
Jason Dreyzehner on Twitter: https://x.com/bitjson
bitjson's blog: https://bitjson.com/
CHIP 2021-05 Targeted Virtual Machine Limits: https://bitcoincashresearch.org/t/chi...
CHIP 2024-07 BigInt: High-Precision Arithmetic for Bitcoin Cash: https://bitcoincashresearch.org/t/chi...
Episode slides: https://docs.google.com/presentation/...
Donations:
bitcoincash:qzm59xkz4pkqgpakkpvjcrsffu4gtjxdju7hq6q30h
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Timestamps:
00:00 Podcast starts
00:38 Intro
01:50 Jason’s intro
06:34 Thoughts on ABLA upgrade
10:20 VM Limits: overview
13:40 VM Limits: rationale
17:31 VM Limits: Satoshi’s work
32:15 Differences among implementations
39:26 BTC overflow bug
45:00 CHIP: Targeted VM Limits
49:35 VM Limits + Big Integers
52:28 Big Ints CHIP relation to VM Limits CHIP
1:00:18 Benchmarking worst case contracts with LibAuth
1:02:24 Timing: 2025 vs 2026
1:10:35 Testing process
1:16:55 Zero-Confirmation Escrows (ZCE) and Looping
1:20:35 0-confirmations, miner incentives, and finality
1:25:10 Loops and UTXO commitments
1:34:32 CashTokens
1:39:17 Mathieu’s Q: Zero knowledge proof verifier?
1:42:33 Sidechain necessary for prediction market apps?
1:49:29 Jason’s message to the community
1:51:00 Podcast supporter appreciation
1:52:03 Shoutouts and outro
#bitcoin #bitcoincash #bch #btc #crypto #cryptocurrency #cbdc ▪️