Trust

Axioms come from the Lean kernel (Lean (version 4.35.0, x86_64-unknown-linux-gnu, commit eb6cafb7290e8bd5f2937522d8d804f58f02bafc, Release)): the constants each declaration depends on, as Lean's collectAxioms reports them. Standard axioms are propext, Classical.choice and Quot.sound.

no axioms
98
standard axioms
182
sorry
0
extra axioms
0
unknown
0

What the badges mean

no axioms
Lean's kernel checked the proof, and it rests on nothing but Lean's rules.
standard axioms
Checked by the kernel, using only propext, Classical.choice or Quot.sound: the three axioms nearly all of mathematics in Lean uses.
extra axioms
Checked by the kernel, but it assumes something the project declared with `axiom`. It is only as true as those assumptions.
depends on sorry
Not proved: somewhere in it, or in something it uses, a proof was left out (`sorry`).
trust unknown
Lean did not check it: Lean was not run, the file did not elaborate, or Lean has no constant by that name.