Pith Number

pith:QPVK6DK7

pith:2016:QPVK6DK7FK5I5M7MINHFCUS7WJ

not attested not anchored not stored refs pending

Prompt Delay

Felix Klein, Martin Zimmermann

arxiv:1602.05045 v2 · 2016-02-16 · cs.GT · cs.FL · cs.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QPVK6DK7FK5I5M7MINHFCUS7WJ}

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	2026-05-18T01:02:56.563129Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

83eaaf0d5f2aba8eb3ec434e51525fb278918af63da74f91f7557dafcfe25137

Aliases

arxiv: 1602.05045 · arxiv_version: 1602.05045v2 · doi: 10.48550/arxiv.1602.05045 · pith_short_12: QPVK6DK7FK5I · pith_short_16: QPVK6DK7FK5I5M7M · pith_short_8: QPVK6DK7

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/QPVK6DK7FK5I5M7MINHFCUS7WJ \
  | 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: 83eaaf0d5f2aba8eb3ec434e51525fb278918af63da74f91f7557dafcfe25137

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e326627d89a9699533aeed8c97159f7410180d7dd8df1597bc6d49a369ca89c2",
    "cross_cats_sorted": [
      "cs.FL",
      "cs.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.GT",
    "submitted_at": "2016-02-16T15:07:23Z",
    "title_canon_sha256": "284149e7fc9bfa713510b22cdc1a5b5da03f902aed13ac064b565000ef1b2c07"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1602.05045",
    "kind": "arxiv",
    "version": 2
  }
}