Pith Number

pith:I7AZUAUR

pith:2013:I7AZUAURXRIB5P2XDH3KW2LGHA

not attested not anchored not stored refs pending

Do System Test Cases Grow Old?

Robert Feldt

arxiv:1310.4989 v2 · 2013-10-18 · 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{I7AZUAURXRIB5P2XDH3KW2LGHA}

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	2026-05-18T03:09:47.154188Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

47c19a0291bc501ebf5719f6ab69663830de2d1a79df0b34c1a9de5e5af4dd82

Aliases

arxiv: 1310.4989 · arxiv_version: 1310.4989v2 · doi: 10.48550/arxiv.1310.4989 · pith_short_12: I7AZUAURXRIB · pith_short_16: I7AZUAURXRIB5P2X · pith_short_8: I7AZUAUR

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/I7AZUAURXRIB5P2XDH3KW2LGHA \
  | 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: 47c19a0291bc501ebf5719f6ab69663830de2d1a79df0b34c1a9de5e5af4dd82

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2d85c8d78876d0432dbb97bb73eebb1bd3c32e82df38b05a78c1c09197b5e668",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2013-10-18T12:21:54Z",
    "title_canon_sha256": "b695cb43983da78ec72014db0957a1f4e4b203d3716a11729264bd2eb8d1521a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.4989",
    "kind": "arxiv",
    "version": 2
  }
}