Pith Number

pith:PJ54UAP4

pith:2012:PJ54UAP43P4767RHCIRMZUFQC3

not attested not anchored not stored refs pending

Simplifying Contract-Violating Traces

Adrian Francalanza (University of Malta), Christian Colombo (University of Malta), Ian Grima (University of Malta)

arxiv:1209.2681 v1 · 2012-09-11 · cs.SE · cs.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PJ54UAP43P4767RHCIRMZUFQC3}

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	2026-05-18T03:45:42.393458Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7a7bca01fcdbf9ff7e271222ccd0b016c2984f0a33d39a3c47dcfc41949765d0

Aliases

arxiv: 1209.2681 · arxiv_version: 1209.2681v1 · doi: 10.48550/arxiv.1209.2681 · pith_short_12: PJ54UAP43P47 · pith_short_16: PJ54UAP43P4767RH · pith_short_8: PJ54UAP4

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/PJ54UAP43P4767RHCIRMZUFQC3 \
  | 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: 7a7bca01fcdbf9ff7e271222ccd0b016c2984f0a33d39a3c47dcfc41949765d0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a4935d963d19b8102d20bacdb255e806020e5102e626cd6e2f98d7ac21ddd73d",
    "cross_cats_sorted": [
      "cs.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2012-09-11T06:30:58Z",
    "title_canon_sha256": "5d1444d14ee192a3f839b20d33b3c274dfff7c38a131cc63d8b007915374711b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.2681",
    "kind": "arxiv",
    "version": 1
  }
}