Pith Number

pith:ZMN44NDP

pith:2012:ZMN44NDPWRHAOE6Q5BZ43Q2MXS

not attested not anchored not stored refs pending

Sitting closer to friends than enemies, revisited

Jakub Onufry Wojtaszczyk, Marcin Pilipczuk, Marek Cygan, Micha{\l} Pilipczuk

arxiv:1201.1869 v1 · 2012-01-09 · cs.DS · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZMN44NDPWRHAOE6Q5BZ43Q2MXS}

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	2026-05-18T04:04:55.474747Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cb1bce346fb44e0713d0e873cdc34cbcbd78cc5e5010dbd684c4fafc0cd02e4d

Aliases

arxiv: 1201.1869 · arxiv_version: 1201.1869v1 · doi: 10.48550/arxiv.1201.1869 · pith_short_12: ZMN44NDPWRHA · pith_short_16: ZMN44NDPWRHAOE6Q · pith_short_8: ZMN44NDP

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/ZMN44NDPWRHAOE6Q5BZ43Q2MXS \
  | 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: cb1bce346fb44e0713d0e873cdc34cbcbd78cc5e5010dbd684c4fafc0cd02e4d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4f71239cb90998dc81428ebd3cac54b92fcc186ac20dd96e021000fe1710cb67",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2012-01-09T18:45:36Z",
    "title_canon_sha256": "1c8cea085f03f4dc4573f0dead2c239730fd73c349f3e2943db8fe66f418cfa4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.1869",
    "kind": "arxiv",
    "version": 1
  }
}