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devcon 4 / spankchain payment channels in production

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SpankChain: Payment Channels in Production

Duration: 00:24:16

Speaker: Ameen Soleimani, Arjun Bhupati

Type: Talk

Expertise: Intermediate

Event: Devcon

Date: Jul 2026

The original custodial payment hub architecture; Our motivation for upgrading to a non-custodial hub; The new perun-style hub architecture; How we conducted the upgrade; An overview of features: Streaming payments, Currency auto-conversion (+ price negotiation), 2-token exchange, Custodial payments, Fees; A discussion of various design decisions: Payment Channels vs. Plasma, Perun vs. Hashlocks, Unidirectional vs. Bidirectional Virtual Channels, Emphasizing the “Card”, de-emphasizing the wallet; BOOTY Maximalism vs. ERC20 agnosticism; Future Roadmap; Networked hubs; State channels; Integration into Wallets like Gnosis Safe; Delegated signing keys / permissions; Anticipated Ecosystem Impact; SDK - Everyone gets payment channels; As a foundation for state channels; As a focal point for experimentation.

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Layer 2sdevelopmentdevexplasma