Every Bitcoin is divisible into 100,000,000 sats. Most are interchangeable. Some are not.
Ordinal Theory — formalised by Casey Rodarmor — assigns every sat a unique number based on mining order. That ordering exposes a hidden lattice of rare events: the first sat of a block, the first of a difficulty adjustment, the first after a halving. And beyond Rodarmor's hierarchy, the community has named satributes for sats touched by historic moments — Hal's blocks, the first transaction, the pizza purchase.
The Annons inscribe on these. Not by accident. Each Artefact is forged on a sat with weight. The chain remembers. So do we.