Pith Number

pith:Z3QG2QTX

pith:2012:Z3QG2QTXTYWOISVLVS4DDSIQOG

not attested not anchored not stored refs pending

On Extracting Unit Tests from Interactive Programming Sessions

Adrian Kuhn

arxiv:1212.1796 v1 · 2012-12-08 · 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{Z3QG2QTXTYWOISVLVS4DDSIQOG}

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	2026-05-18T03:38:55.091283Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cee06d42779e2ce44aabacb831c91071b82c73bd0cf179c7907e650eea386b22

Aliases

arxiv: 1212.1796 · arxiv_version: 1212.1796v1 · doi: 10.48550/arxiv.1212.1796 · pith_short_12: Z3QG2QTXTYWO · pith_short_16: Z3QG2QTXTYWOISVL · pith_short_8: Z3QG2QTX

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/Z3QG2QTXTYWOISVLVS4DDSIQOG \
  | 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: cee06d42779e2ce44aabacb831c91071b82c73bd0cf179c7907e650eea386b22

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4c33fd2f9fdf1f40f045e28275f5251b8f1a116ae55e17766e0de66a854d8e7f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2012-12-08T14:21:04Z",
    "title_canon_sha256": "cbf2997482a054843dc9b6bf3ff281840a771944f6e8e882d6a03c8f9eb554bb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.1796",
    "kind": "arxiv",
    "version": 1
  }
}