Pith Number

pith:OOYEDGLF

pith:2017:OOYEDGLFMOZ7Y2N5AKK6NUNDWV

not attested not anchored not stored refs pending

Automated Program Analysis for Novice Programmers

Ansgar Fehnker, Tim Blok

arxiv:1710.00163 v1 · 2017-09-30 · 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{OOYEDGLFMOZ7Y2N5AKK6NUNDWV}

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	2026-05-18T00:33:57.673433Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

73b041996563b3fc69bd0295e6d1a3b5793ccee914f2146d3ba890d0132bee87

Aliases

arxiv: 1710.00163 · arxiv_version: 1710.00163v1 · doi: 10.48550/arxiv.1710.00163 · pith_short_12: OOYEDGLFMOZ7 · pith_short_16: OOYEDGLFMOZ7Y2N5 · pith_short_8: OOYEDGLF

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/OOYEDGLFMOZ7Y2N5AKK6NUNDWV \
  | 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: 73b041996563b3fc69bd0295e6d1a3b5793ccee914f2146d3ba890d0132bee87

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4f29d527467f0159b45ca03821e14132bd452bfce3a1000c460f5f38b24e3dfc",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2017-09-30T08:26:59Z",
    "title_canon_sha256": "846be603adf0b775c5b3647bd0ea65fb8649fbc653b91e91f562a7c9225a2955"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1710.00163",
    "kind": "arxiv",
    "version": 1
  }
}