Pith Number

pith:7BQIJALL

pith:2016:7BQIJALLPSULMUTR4FFO7WO5MI

not attested not anchored not stored refs pending

Strong Backdoors for Default Logic

Arne Meier, Irina Schindler, Johannes K. Fichte

arxiv:1602.06052 v1 · 2016-02-19 · cs.LO · cs.AI · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7BQIJALLPSULMUTR4FFO7WO5MI}

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	2026-05-18T01:20:21.740941Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f86084816b7ca8b65271e14aefd9dd6202e1c874c6724ac04e3257b4594ede95

Aliases

arxiv: 1602.06052 · arxiv_version: 1602.06052v1 · doi: 10.48550/arxiv.1602.06052 · pith_short_12: 7BQIJALLPSUL · pith_short_16: 7BQIJALLPSULMUTR · pith_short_8: 7BQIJALL

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/7BQIJALLPSULMUTR4FFO7WO5MI \
  | 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: f86084816b7ca8b65271e14aefd9dd6202e1c874c6724ac04e3257b4594ede95

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "78bfc3a1d1ba974ca6f8da667bd0ecf6f760c6e629522b62152e0c3b5efbd446",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.CC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2016-02-19T06:42:48Z",
    "title_canon_sha256": "4236c4f94d1bd220f92cfbf96c642715b43d146a9d0a18ad02412452b2a9817d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1602.06052",
    "kind": "arxiv",
    "version": 1
  }
}