Pith Number

pith:VTBM5GF5

pith:2012:VTBM5GF5HIMGXONFIVBUXOPJYB

not attested not anchored not stored refs pending

Secure Frameproof Code Through Biclique Cover

Farokhlagha Moazami, Hossein Hajiabolhassan

arxiv:1202.1889 v1 · 2012-02-09 · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VTBM5GF5HIMGXONFIVBUXOPJYB}

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	2026-05-18T04:02:38.842087Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

acc2ce98bd3a186bb9a545434bb9e9c06cf1a179edd4759d3a430579858dea52

Aliases

arxiv: 1202.1889 · arxiv_version: 1202.1889v1 · doi: 10.48550/arxiv.1202.1889 · pith_short_12: VTBM5GF5HIMG · pith_short_16: VTBM5GF5HIMGXONF · pith_short_8: VTBM5GF5

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/VTBM5GF5HIMGXONFIVBUXOPJYB \
  | 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: acc2ce98bd3a186bb9a545434bb9e9c06cf1a179edd4759d3a430579858dea52

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "07804824ffd16a98a0dc9d48f10c6453edb3f0b6752bce677da5c87bd2f46e93",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2012-02-09T05:25:51Z",
    "title_canon_sha256": "45d97d447ea6d237546ba75b3eb4164952bb05826812a1720645e1467dc56865"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.1889",
    "kind": "arxiv",
    "version": 1
  }
}