Pith Number

pith:HECZR26M

pith:2019:HECZR26M724BV4PWG4CTYUL2OG

not attested not anchored not stored refs pending

Approximation Algorithms for Coordinating Ad Campaigns on Social Networks

David Kempe, Kartik Lakhotia

arxiv:1908.09185 v2 · 2019-08-24 · cs.SI · 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{HECZR26M724BV4PWG4CTYUL2OG}

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	2026-07-05T00:28:23.765835Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

390598ebccfeb81af1f637053c517a7195d396b59ff6b61a8de007b45580f5d2

Aliases

arxiv: 1908.09185 · arxiv_version: 1908.09185v2 · doi: 10.48550/arxiv.1908.09185 · pith_short_12: HECZR26M724B · pith_short_16: HECZR26M724BV4PW · pith_short_8: HECZR26M

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/HECZR26M724BV4PWG4CTYUL2OG \
  | 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: 390598ebccfeb81af1f637053c517a7195d396b59ff6b61a8de007b45580f5d2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3350dd815ccf4559506d2044d537754234e90aaa018ac00da4cde6ab3959b571",
    "cross_cats_sorted": [
      "cs.GT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SI",
    "submitted_at": "2019-08-24T18:50:10Z",
    "title_canon_sha256": "74a3798b718edf4842221c07362f804c6235d053c5c61425d997414e56a54a8b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.09185",
    "kind": "arxiv",
    "version": 2
  }
}