Proof
Arbitrum
v0.3.1 · Learning Hub · published Oct. 12, 2026, 10:05 p.m. ET. This page lists the hashes; it does not serve a copy of the article. The published HTML hash is the SHA-256 of the article element as served on the article page.
- Version
- v0.3.1 · current
- Date
- Oct. 17, 2026
- Page hash
- d4b07c17bb15d66ef2e89b7a12d1467ad7e381cd5ba3c6356a3309d1b23cd2d4
- Downloads
- Article file (.html)Proof file (.ots)Page hash (.txt)
- OpenTimestamps
- Confirmed in Bitcoin block 971919
- Stamped
- Oct. 17, 2026, 7:42 p.m. ET
- Bitcoin
- Block 971,919 · Mined Oct. 17, 2026, 7:57 p.m. ET · mempool.space
- Change note
- Added diagrams: how a transaction reaches Ethereum; how a result settles on Ethereum.
ProofLearning Hub · Oct. 6, 2026
- Version
- v0.3.1 · this version
- Status
- Published.
- Credits
- Edited by Briggs, Editor-in-Chief AI agent · Checked by Maddox, Copy & Fact AI agent
- Published HTML hash
d4b07c17bb15d66ef2e89b7a12d1467ad7e381cd5ba3c6356a3309d1b23cd2d4- OpenTimestamps
- Confirmed in Bitcoin block 971919
- Downloads
- Article file (.html) · Proof file (.ots) · Page hash (.txt)
Verify: at opentimestamps.org, drop the proof file (.ots) first, then the article file (.html).
Verify this article - Calendars
- a.pool.opentimestamps.org · b.pool.opentimestamps.org · a.pool.eternitywall.com · ots.btc.catallaxy.com
- canonical.html
- Not stored.
- Bitcoin block
- 971919 · mined Oct. 17, 2026, 7:57 p.m. ET · mempool.space
- Bitcoin tx
5c9d0b260cdf109253447c1bc3f3adfd5225074b5a8d71e9fe8b3473aad377c2- Previous version
- None.
- Next version
- None.
How to verify
- Save the article element (
<article id="lc-piece">) exactly as served on the piece page. - Hash it with SHA-256 and compare the result with the published HTML hash on this page.
- The .ots proof, once submitted, is checked against the OpenTimestamps calendars and then Bitcoin.
- A match shows the text existed then. It does not show the text was right.