Pith Number

pith:3UKTRVTC

pith:2012:3UKTRVTCTJQEZYR5PENMLYLYH6

not attested not anchored not stored refs pending

Automatic Unbounded Verification of Alloy Specifications with Prover9

Alcino Cunha, Nuno Macedo

arxiv:1209.5773 v1 · 2012-09-25 · cs.FL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3UKTRVTCTJQEZYR5PENMLYLYH6}

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	2026-05-18T03:44:46.483545Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dd1538d6629a604ce23d791ac5e1783fbdea6815b354a4388300e9185b9d3116

Aliases

arxiv: 1209.5773 · arxiv_version: 1209.5773v1 · doi: 10.48550/arxiv.1209.5773 · pith_short_12: 3UKTRVTCTJQE · pith_short_16: 3UKTRVTCTJQEZYR5 · pith_short_8: 3UKTRVTC

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/3UKTRVTCTJQEZYR5PENMLYLYH6 \
  | 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: dd1538d6629a604ce23d791ac5e1783fbdea6815b354a4388300e9185b9d3116

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f93fb2faffe992c2da40b5ef8493ea38c978fa93b4806c3a5bf3fe494663feee",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2012-09-25T21:18:54Z",
    "title_canon_sha256": "ab0ef0d48927ace699aa4760e610c6f363c4ac02c98d6dcde09f04ca8ea293b2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.5773",
    "kind": "arxiv",
    "version": 1
  }
}