Pith Number

pith:2HRCZB3T

pith:2015:2HRCZB3TTJB37ITXG7RYK4LIVX

not attested not anchored not stored refs pending

A Survey and Classification of Controlled Natural Languages

Tobias Kuhn

arxiv:1507.01701 v1 · 2015-07-07 · cs.CL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2HRCZB3TTJB37ITXG7RYK4LIVX}

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	2026-05-18T01:37:12.601380Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d1e22c87739a43bfa27737e3857168add4257e3ec3104a079d7cb7ef47eb25b1

Aliases

arxiv: 1507.01701 · arxiv_version: 1507.01701v1 · doi: 10.48550/arxiv.1507.01701 · pith_short_12: 2HRCZB3TTJB3 · pith_short_16: 2HRCZB3TTJB37ITX · pith_short_8: 2HRCZB3T

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/2HRCZB3TTJB37ITXG7RYK4LIVX \
  | 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: d1e22c87739a43bfa27737e3857168add4257e3ec3104a079d7cb7ef47eb25b1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a4b6f83065ca132f6143978df3102b04efd13677c61d7fde862bc314a9d89057",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2015-07-07T08:23:31Z",
    "title_canon_sha256": "de64ef182ffe705fdec12ec02e83dfd6f83f7feb7f2342eafba2a09af86850b3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.01701",
    "kind": "arxiv",
    "version": 1
  }
}