Pith Number

pith:CFMPFL4T

pith:2019:CFMPFL4T3IT4VJODFHMP3PE6U2

not attested not anchored not stored refs pending

Generating Difficult SAT Instances by Preventing Triangles

Barry O'Sullivan, Guillaume Escamocher, Steven David Prestwich

arxiv:1903.03592 v1 · 2019-03-08 · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CFMPFL4T3IT4VJODFHMP3PE6U2}

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	2026-05-17T23:51:45.083772Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1158f2af93da27caa5c329d8fdbc9ea69b2f6c476b7fb1c0f77254b3dc183855

Aliases

arxiv: 1903.03592 · arxiv_version: 1903.03592v1 · doi: 10.48550/arxiv.1903.03592 · pith_short_12: CFMPFL4T3IT4 · pith_short_16: CFMPFL4T3IT4VJOD · pith_short_8: CFMPFL4T

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/CFMPFL4T3IT4VJODFHMP3PE6U2 \
  | 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: 1158f2af93da27caa5c329d8fdbc9ea69b2f6c476b7fb1c0f77254b3dc183855

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4e7e550e93fb1eda7159db14f7e3e98a9fc7e99817bdfa34a194c41b71f10bc8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2019-03-08T18:21:46Z",
    "title_canon_sha256": "01633ee5779b50499ff8a65b5d4ef697444544aa4793792390b216c1a93ad4f2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.03592",
    "kind": "arxiv",
    "version": 1
  }
}