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/bitjsonbitjson's blog: https://bitjson.com/ CHIP 2021-05 Targeted Virtual Machine Limits: https://bitcoincashresearch.org/t/chip-2021-05-targeted-virtual-machine-limits/437CHIP 2024-07 BigInt: High-Precision Arithmetic for Bitcoin Cash: https://bitcoincashresearch.org/t/chip-2024-07-bigint-high-precision-arithmetic-for-bitcoin-cash/1356Episode slides: https://docs.google.com/presentation/d/1wLaTFfq4PQ1dfTs2EMsNxGMQOZKZMIpW/edit?usp=sharing&ouid=100290143879929950045&rtpof=true&sd=trueDonations:bitcoincash:qzm59xkz4pkqgpakkpvjcrsffu4gtjxdju7hq6q30hSponsors:Thank you very much to our flipstarter contributors: https://bchpodcastflipstarter.cash/enGeneral Protocols: https://generalprotocols.com and https://bchbull.com Socials:Website: https://www.bitcoincashpodcast.comTimestamps:00:00 Podcast starts00:38 Intro01:50 Jason’s intro06:34 Thoughts on ABLA upgrade10:20 VM Limits: overview13:40 VM Limits: rationale17:31 VM Limits: Satoshi’s work32:15 Differences among implementations39:26 BTC overflow bug45:00 CHIP: Targeted VM Limits49:35 VM Limits + Big Integers52:28 Big Ints CHIP relation to VM Limits CHIP1:00:18 Benchmarking worst case contracts with LibAuth1:02:24 Timing: 2025 vs 2026 1:10:35 Testing process1:16:55 Zero-Confirmation Escrows (ZCE) and Looping1:20:35 0-confirmations, miner incentives, and finality1:25:10 Loops and UTXO commitments1:34:32 CashTokens1:39:17 Mathieu’s Q: Zero knowledge proof verifier?1:42:33 Sidechain necessary for prediction market apps?1:49:29 Jason’s message to the community1:51:00 Podcast supporter appreciation1:52:03 Shoutouts and outro#bitcoin #bitcoincash #bch #btc #crypto #cryptocurrency #cbdc ▪️

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