Pith Number

pith:5TFJVZMF

pith:2015:5TFJVZMFJKGHTT2KJHHZXPQZKE

not attested not anchored not stored refs pending

Quick Brown Fox in Formal Languages

Kazuhiro Inaba

arxiv:1512.08168 v5 · 2015-12-27 · cs.FL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5TFJVZMFJKGHTT2KJHHZXPQZKE}

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	2026-05-18T01:20:58.715597Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ecca9ae5854a8c79cf4a49cf9bbe195123e62098175a734057f61952502796f1

Aliases

arxiv: 1512.08168 · arxiv_version: 1512.08168v5 · doi: 10.48550/arxiv.1512.08168 · pith_short_12: 5TFJVZMFJKGH · pith_short_16: 5TFJVZMFJKGHTT2K · pith_short_8: 5TFJVZMF

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/5TFJVZMFJKGHTT2KJHHZXPQZKE \
  | 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: ecca9ae5854a8c79cf4a49cf9bbe195123e62098175a734057f61952502796f1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9502512250e03885076f51dbb20a3c508a0f942571d9ff6faadba36999eb1193",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/publicdomain/zero/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2015-12-27T03:55:18Z",
    "title_canon_sha256": "8f0cf9310866ec541f9ebcdc5cb61268224fefac465fa66986c9e0adf6f8203f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.08168",
    "kind": "arxiv",
    "version": 5
  }
}