Pith Number

pith:O4HTXCF7

pith:2013:O4HTXCF7USU7KODBVHWWKVYATA

not attested not anchored not stored refs pending

Initial Findings from a Study of Best Practices and Models for Cyberinfrastructure Software Sustainability

Craig A. Stewart, Eric A. Wernert, Julie Wernert, Von Welch, William K. Barnett

arxiv:1309.1817 v1 · 2013-09-07 · 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{O4HTXCF7USU7KODBVHWWKVYATA}

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	2026-05-18T03:13:57.424180Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

770f3b88bfa4a9f53861a9ed6557009835aaa7ccb5077b0c71fb618d5049db9c

Aliases

arxiv: 1309.1817 · arxiv_version: 1309.1817v1 · doi: 10.48550/arxiv.1309.1817 · pith_short_12: O4HTXCF7USU7 · pith_short_16: O4HTXCF7USU7KODB · pith_short_8: O4HTXCF7

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/O4HTXCF7USU7KODBVHWWKVYATA \
  | 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: 770f3b88bfa4a9f53861a9ed6557009835aaa7ccb5077b0c71fb618d5049db9c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "32adf9419eb0f3e13e2fa6889e24bea09c18939ce4c80274b0a1a57036509167",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2013-09-07T04:07:05Z",
    "title_canon_sha256": "0ac0ba68f3f2a9120f3d24b48f610d630937361012c652abca007eb34936432c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.1817",
    "kind": "arxiv",
    "version": 1
  }
}