CREDENTIAL 0 · HOLDER 0x3e1D…1513

Level 4, expert

solidity engineering · rubric v1 · issued 13 Sep 2026 · band 21 to 25 of 25

WHERE THIS SITS ON THE RUBRIC

LEVEL 4expertAGREED21 to 25

LEVEL 3strong15 to 20

LEVEL 2working9 to 14

LEVEL 1foundational0 to 8

GRADED AGAINST THESE CRITERIA

00correctness of the mechanism

Does the thing it claims to do, under the conditions it claims to handle. Five requires invariants stated and tested.

01handling of failure paths

Every revert is named, reachable and covered. Silent failure scores zero regardless of the rest.

02readability and structure

A reader can follow the control flow without running it. A long single function caps this criterion at three.

03gas and storage awareness

Storage layout and loop bounds show deliberate choices. Five requires a benchmark, not an assertion.

04documentation of intent

Why, not what. Undocumented maths scores at most two however correct it is.

EVERY FIELD BELOW WAS AGREED EXACTLY

level: 4, expert
digest of the graded bytes: 0x29b0…35f2
bytes graded: 5,146 chars
work addressed the assessor: false

There is no per-criterion score on this page and no total. Each node grades every criterion twice while it works - once with the criteria top to bottom and once bottom to top, taking the lower band of the two - then discards the numbers. Publishing them would mean either failing consensus on arithmetic that never settles, or letting a validator vote agree about a figure it privately disagreed with, and then printing that figure here.

EVERY ATTEMPT STAYS ON THE PAGE

13 Sep 2026Level 4, expertTHIS PAGE

Only the highest level is returned to a consumer, and every attempt stays here. A holder is not punished for a first try, and nobody opening this page is shown a curated history.

DISAGREE WITH THIS LEVEL?

Contesting marks this record as disputed. It does not change the level, and it does not remove the credential - consumers keep reading the level and see the contested flag alongside it, then apply their own policy.

only the holder of this credential can contest it