Pith Number

pith:4X6ZYRSQ

pith:2017:4X6ZYRSQZU46GBG7UJBQIOSK4K

not attested not anchored not stored refs pending

A Linear Time Algorithm for Solving #2SAT on Cactus Formulas

G. De Ita, H. A. Montes-Venegas, J. R. Marcial, M. A. L\'Opez, R. Alejo

arxiv:1702.08581 v1 · 2017-02-27 · 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{4X6ZYRSQZU46GBG7UJBQIOSK4K}

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	2026-05-18T00:49:48.326225Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e5fd9c4650cd39e304dfa243043a4ae2970f5a878ac3e94ea2400211c1e22d17

Aliases

arxiv: 1702.08581 · arxiv_version: 1702.08581v1 · doi: 10.48550/arxiv.1702.08581 · pith_short_12: 4X6ZYRSQZU46 · pith_short_16: 4X6ZYRSQZU46GBG7 · pith_short_8: 4X6ZYRSQ

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/4X6ZYRSQZU46GBG7UJBQIOSK4K \
  | 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: e5fd9c4650cd39e304dfa243043a4ae2970f5a878ac3e94ea2400211c1e22d17

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9b7cd0bfcdba3a620d9d26dbfb1d3293e48c36d2b412e2e16432720ff09e62f9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2017-02-27T23:44:11Z",
    "title_canon_sha256": "da091904138d837cf9dc170f0b3f90490d4d856d9232c4d3ff33d92738015eb6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.08581",
    "kind": "arxiv",
    "version": 1
  }
}