Pith Number

pith:4J63GLDR

pith:2018:4J63GLDRYL6M4H3OQQ3NCVVGLA

not attested not anchored not stored refs pending

The Third Trick

Hannes Diener, Matthew Hendtlass

arxiv:1801.10136 v4 · 2018-01-30 · math.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{4J63GLDRYL6M4H3OQQ3NCVVGLA}

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	2026-07-05T06:23:23.022658Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e27db32c71c2fcce1f6e8436d156a65823a03a5a60fcdbb959cec0d101bb8777

Aliases

arxiv: 1801.10136 · arxiv_version: 1801.10136v4 · doi: 10.48550/arxiv.1801.10136 · pith_short_12: 4J63GLDRYL6M · pith_short_16: 4J63GLDRYL6M4H3O · pith_short_8: 4J63GLDR

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/4J63GLDRYL6M4H3OQQ3NCVVGLA \
  | 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: e27db32c71c2fcce1f6e8436d156a65823a03a5a60fcdbb959cec0d101bb8777

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0baacc067d8321dd3ee536496ca1895d9b4fe7bee0776691cf114984249a31a5",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2018-01-30T18:36:02Z",
    "title_canon_sha256": "804c1b902140cfb3a1f94553e535d041675c80f956bc2231ec43d61b576fa35c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.10136",
    "kind": "arxiv",
    "version": 4
  }
}