Block #23

block	#23 of 39 (chain of 40 blocks)
sealed at	2026-09-07T19:07:53.880Z
kind	seal
content	Demo video: Certificate and QR
signed by	Stefania Overman (key 3391cebb120892c6)
block hash	`4577c935aae0d5dda03775c24ed74d46c95d77d75223d797d4c442ce91096f08`
previous hash	`1e5ce8b7ba29ce9c31d6e600f32b36f5983e6a8d0930ff107ea5883b4613f094`
public anchor	confirmed in Bitcoin block 966087, 966092, 966114 ✓ — statement · proof (.ots) · verify it yourself

This is the library’s own record; it lives on no third-party blockchain, by sealed covenant (no token, ever).

Verify it without trusting this page: download the raw chain and recompute every hash, or check the signed tip at /api/tip.

The public anchor stamps exactly (index, hash, sealedAt, and this page’s URL) into Bitcoin via OpenTimestamps — verify the proof with the open ots tool; no trust in this server needed. All anchors: /api/anchors.