Pith Number

pith:ER7BDDQC

pith:2026:ER7BDDQC6O4JTPLSDVECW5ZWJP

not attested not anchored not stored refs pending

Skillware: A Software Ontology and Engineering Lifecycle for Persistent Behavioral Artifacts

Haodi Fan, Zucong Lan

arxiv:2607.18970 v1 · 2026-07-21 · cs.SE · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ER7BDDQC6O4JTPLSDVECW5ZWJP}

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	2026-07-22T01:23:22.338921Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

247e118e02f3b899bd721d482b77364bc2702af46e0e129becd21593d92c8b57

Aliases

arxiv: 2607.18970 · arxiv_version: 2607.18970v1 · doi: 10.48550/arxiv.2607.18970 · pith_short_12: ER7BDDQC6O4J · pith_short_16: ER7BDDQC6O4JTPLS · pith_short_8: ER7BDDQC

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/ER7BDDQC6O4JTPLSDVECW5ZWJP \
  | 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: 247e118e02f3b899bd721d482b77364bc2702af46e0e129becd21593d92c8b57

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c39cfe4988d0db863dce8505d1452bddf24e10fb168512f99cf52a714ac1b25b",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2026-07-21T11:03:56Z",
    "title_canon_sha256": "a5af5b06088bc4d42bdc5a2351a86ee8619e502111d5486ed1985b22c86dc575"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.18970",
    "kind": "arxiv",
    "version": 1
  }
}