Arbitrum

Learning Hub · every version of this article, each with its own hash and Bitcoin proof.

Version: v0.2
Date: Oct. 6, 2026
Page hash: 6e13459ff62e871ce4a10445716e4d30f842cfeaa1efaae3bb5272f56bae6d3a
Downloads: Article file (.html)Proof file (.ots)Page hash (.txt)
OpenTimestamps: Confirmed in Bitcoin block 971172
Stamped: Oct. 12, 2026, 10:06 p.m. ET
Bitcoin: Block 971,172 · Mined Oct. 12, 2026, 10:21 p.m. ET · mempool.space
Change note: Narrowed the Offchain Labs line to what the Timeboost page supports, that Offchain Labs developed Timeboost, and noted that Arbitrum One u