Pith Number

pith:EDZTKGEM

pith:2026:EDZTKGEMYFOSLTX34ET5KQD3RS

not attested not anchored not stored refs pending

Skill Coverage: A Test Adequacy Metric for Agent Skills

Boyin Tan, Xiaowei Huang, Youcheng Sun

arxiv:2606.20659 v1 · 2026-06-09 · cs.AI · cs.LG · cs.SE

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EDZTKGEMYFOSLTX34ET5KQD3RS}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-06-23T00:11:52.822846Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

20f335188cc15d25cefbe127d5407b8c8d2fd5b0737bf292e831be38d23afcf3

Aliases

arxiv: 2606.20659 · arxiv_version: 2606.20659v1 · doi: 10.48550/arxiv.2606.20659 · pith_short_12: EDZTKGEMYFOS · pith_short_16: EDZTKGEMYFOSLTX3 · pith_short_8: EDZTKGEM

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/EDZTKGEMYFOSLTX34ET5KQD3RS \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 20f335188cc15d25cefbe127d5407b8c8d2fd5b0737bf292e831be38d23afcf3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fb2a7af113dcc0a36db3e6f53e634fc02e1c65e922faceee5275afab8cbb0959",
    "cross_cats_sorted": [
      "cs.LG",
      "cs.SE"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2026-06-09T10:16:05Z",
    "title_canon_sha256": "d09c2809e53c0dd753fa2052c0ec5199e4504a61724d0cdd766f04bdaff7c31d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.20659",
    "kind": "arxiv",
    "version": 1
  }
}