x402 — An open protocol for internet-native payments

Re:x402 — An open protocol for internet-native payments by LelouBil on Tuesday September 23, 2025 @03:21PM (#45351540)

> Instant settlement

> Accept payments at the speed of the blockchain. Money in your wallet in 2 seconds, not T+2.

Are crypto payments instant now ?

I don't follow this space at all but my understanding was that the "speed of the blockchain" was pretty slow.

Or maybe they mean this compared to payment processors or bank transfers that can take days ?

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Re:x402 — An open protocol for internet-native payments by __erik on Tuesday September 23, 2025 @03:39PM (#45351769)

Blockchains are fast and and cheap now! Modern blockchains like Base, Solana, Sui (and many more) typically have block times <2 seconds, and a stablecoin transfer can cost as little as $0.0005 independent of the $ amount being transfered

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Re:x402 — An open protocol for internet-native payments by solumos on Tuesday September 23, 2025 @08:05PM (#45354490)

There are now chains with sub-second Time to Finality and sub-cent gas fees (this was not true ~3 years ago)

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Re:x402 — An open protocol for internet-native payments by ranguna on Wednesday September 24, 2025 @05:48AM (#45358153)

Which chains have sub second block times?

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Re:x402 — An open protocol for internet-native payments by swalsh on Wednesday September 24, 2025 @11:02AM (#45361367)

SOL, AVAX, SUI

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Re:x402 — An open protocol for internet-native payments by ranguna on Thursday September 25, 2025 @05:39AM (#45370897)

Thanks

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Re:x402 — An open protocol for internet-native payments by solumos on Thursday September 25, 2025 @05:05PM (#45379082)

Block time != time to finality

Base has sub-second block times, but because it's an Ethereum L2, it technically has ~15min TTF

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Re:x402 — An open protocol for internet-native payments by egorfine on Wednesday September 24, 2025 @07:54AM (#45359090)

> Are crypto payments instant now ?

Practically speaking yes.

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Re:x402 — An open protocol for internet-native payments by swalsh on Wednesday September 24, 2025 @11:01AM (#45361354)

Yeah, it's mostly bitcoin that's slow. SOL is sub-second, AVAX has a new architecture that has gone from a few seconds to sub-second, and while I have never used SUI I believe that one too is sub-second. ETH is still relatively slow, but not bitcoin slow.

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