Pith Number

pith:FZN7PCNJ

pith:2013:FZN7PCNJ4DNHU3XYLWMOP7CT2Z

not attested not anchored not stored refs pending

Learning to answer questions

Ana Cristina Mendes, Lu\'isa Coheur, S\'ergio Curto

arxiv:1309.1125 v1 · 2013-09-04 · 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{FZN7PCNJ4DNHU3XYLWMOP7CT2Z}

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	2026-05-18T03:14:09.029059Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2e5bf789a9e0da7a6ef85d98e7fc53d65ce6817cc9caa571bef7ec6a6f44831d

Aliases

arxiv: 1309.1125 · arxiv_version: 1309.1125v1 · doi: 10.48550/arxiv.1309.1125 · pith_short_12: FZN7PCNJ4DNH · pith_short_16: FZN7PCNJ4DNHU3XY · pith_short_8: FZN7PCNJ

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/FZN7PCNJ4DNHU3XYLWMOP7CT2Z \
  | 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: 2e5bf789a9e0da7a6ef85d98e7fc53d65ce6817cc9caa571bef7ec6a6f44831d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2fb36c51bc5a808be6ae563a56db96ae86a7f8bcfd4f80940e5cb087b85d3301",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2013-09-04T18:10:22Z",
    "title_canon_sha256": "89fef9d78cb54537bbfbb08291a73a70326f940a026baa792bf6b23a2ddeea0c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.1125",
    "kind": "arxiv",
    "version": 1
  }
}