Pith Number

pith:QSNXVOU4

pith:2013:QSNXVOU4YHAFA5GU5G6BBVRHMD

not attested not anchored not stored refs pending

On QBF Proofs and Preprocessing

Joao Marques-Silva, Mikolas Janota, Radu Grigore

arxiv:1310.2491 v1 · 2013-10-09 · 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{QSNXVOU4YHAFA5GU5G6BBVRHMD}

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	2026-05-18T03:10:56.554210Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

849b7aba9cc1c05074d4e9bc10d62760c7a39b099d317039e526d7fdfdbcee12

Aliases

arxiv: 1310.2491 · arxiv_version: 1310.2491v1 · doi: 10.48550/arxiv.1310.2491 · pith_short_12: QSNXVOU4YHAF · pith_short_16: QSNXVOU4YHAFA5GU · pith_short_8: QSNXVOU4

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/QSNXVOU4YHAFA5GU5G6BBVRHMD \
  | 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: 849b7aba9cc1c05074d4e9bc10d62760c7a39b099d317039e526d7fdfdbcee12

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "44a2de8ecd42acf7ecc0db3feea9c43b13ae1f3f762f0e59a1e355b16ea1dc1d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2013-10-09T14:23:27Z",
    "title_canon_sha256": "7f09629bc04a069f77da22af20aac54b245be689274cdcfad3ce6fbc3f720f07"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.2491",
    "kind": "arxiv",
    "version": 1
  }
}