Pith Number

pith:IBVWXP3Z

pith:2019:IBVWXP3ZRQSHL5OXDYDBZAJ6SQ

not attested not anchored not stored refs pending

Overt choice

Arno Pauly, Matthew de Brecht, Matthias Schr\"oder

arxiv:1902.05926 v1 · 2019-02-14 · math.LO · cs.LO · math.GN

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IBVWXP3ZRQSHL5OXDYDBZAJ6SQ}

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	2026-05-17T23:53:55.071080Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

406b6bbf798c2475f5d71e061c813e9403caa6a81aa62369f5108b1f4393f40e

Aliases

arxiv: 1902.05926 · arxiv_version: 1902.05926v1 · doi: 10.48550/arxiv.1902.05926 · pith_short_12: IBVWXP3ZRQSH · pith_short_16: IBVWXP3ZRQSHL5OX · pith_short_8: IBVWXP3Z

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/IBVWXP3ZRQSHL5OXDYDBZAJ6SQ \
  | 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: 406b6bbf798c2475f5d71e061c813e9403caa6a81aa62369f5108b1f4393f40e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e1131e9c7de53dd0d1daf97784b5496432b6519b3db698efd6fce44c3a744443",
    "cross_cats_sorted": [
      "cs.LO",
      "math.GN"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2019-02-14T09:29:49Z",
    "title_canon_sha256": "9479b0189f35a6239dd1631d565689623b97ded0f5553febc9c64616cb229030"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.05926",
    "kind": "arxiv",
    "version": 1
  }
}