Pith Number

pith:G3HWF34L

pith:2015:G3HWF34LH3L5O3JZ3N5XAOXXOX

not attested not anchored not stored refs pending

Unsupervised authorship attribution

David Fifield, Emil Lunde, Torbj{\o}rn Follan

arxiv:1503.07613 v1 · 2015-03-26 · 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{G3HWF34LH3L5O3JZ3N5XAOXXOX}

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	2026-05-18T02:20:19.242338Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

36cf62ef8b3ed7d76d39db7b703af775d044473f8bc1386f0005739f43fb85ea

Aliases

arxiv: 1503.07613 · arxiv_version: 1503.07613v1 · doi: 10.48550/arxiv.1503.07613 · pith_short_12: G3HWF34LH3L5 · pith_short_16: G3HWF34LH3L5O3JZ · pith_short_8: G3HWF34L

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/G3HWF34LH3L5O3JZ3N5XAOXXOX \
  | 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: 36cf62ef8b3ed7d76d39db7b703af775d044473f8bc1386f0005739f43fb85ea

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "73234cfb921807e5dbee04e9fdb83932981f20da12d8503e1b2ae263c2f7b976",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/publicdomain/",
    "primary_cat": "cs.CL",
    "submitted_at": "2015-03-26T04:02:26Z",
    "title_canon_sha256": "5a2a3537835708f8e1b02234e516e96bcb151774c940e96b79df2b48e87a3047"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.07613",
    "kind": "arxiv",
    "version": 1
  }
}