Pith Number

pith:W5NUXEWH

pith:2009:W5NUXEWHMJTZNQ374PJ66HMTFF

not attested not anchored not stored refs pending

Frugal and Truthful Auctions for Vertex Covers, Flows, and Cuts

Cristopher Moore, David Kempe, Mahyar Salek

arxiv:0912.3310 v2 · 2009-12-17 · cs.CC · cs.GT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{W5NUXEWHMJTZNQ374PJ66HMTFF}

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	2026-05-18T04:20:13.273734Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b75b4b92c7626796c37fe3d3ef1d9329710d9034d1868b7b8e1ed86a9b31618f

Aliases

arxiv: 0912.3310 · arxiv_version: 0912.3310v2 · doi: 10.48550/arxiv.0912.3310 · pith_short_12: W5NUXEWHMJTZ · pith_short_16: W5NUXEWHMJTZNQ37 · pith_short_8: W5NUXEWH

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/W5NUXEWHMJTZNQ374PJ66HMTFF \
  | 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: b75b4b92c7626796c37fe3d3ef1d9329710d9034d1868b7b8e1ed86a9b31618f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0c71afebd4062ffe32fc3b5d258c9757aff76f5a7533cecc2744aa29574c6bd9",
    "cross_cats_sorted": [
      "cs.GT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2009-12-17T02:40:36Z",
    "title_canon_sha256": "02c45a50758a462b2c687bdc4b948d64a748081da6623549594cc610560f24eb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.3310",
    "kind": "arxiv",
    "version": 2
  }
}