Pith Number

pith:7OK7D7RA

pith:2018:7OK7D7RA4D442ECK5KSYQIPIKP

not attested not anchored not stored refs pending

Overview of the CLEF-2018 CheckThat! Lab on Automatic Identification and Verification of Political Claims. Task 1: Check-Worthiness

Alberto Barron-Cedeno, Giovanni Da San Martino, Pepa Atanasova, Preslav Nakov, Reem Suwaileh, Spas Kyuchukov, Tamer Elsayed, Wajdi Zaghouani

arxiv:1808.05542 v1 · 2018-08-08 · 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{7OK7D7RA4D442ECK5KSYQIPIKP}

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	2026-05-18T00:07:56.729810Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fb95f1fe20e0f9cd104aeaa58821e853e779b9067b5796e663c54a8c71dc95b0

Aliases

arxiv: 1808.05542 · arxiv_version: 1808.05542v1 · doi: 10.48550/arxiv.1808.05542 · pith_short_12: 7OK7D7RA4D44 · pith_short_16: 7OK7D7RA4D442ECK · pith_short_8: 7OK7D7RA

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/7OK7D7RA4D442ECK5KSYQIPIKP \
  | 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: fb95f1fe20e0f9cd104aeaa58821e853e779b9067b5796e663c54a8c71dc95b0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1365b639238d608e8c5a0c0b60d168dae326e57b4aa1883cd982b763e91b1c58",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2018-08-08T12:51:21Z",
    "title_canon_sha256": "55e9f05729c12deb8444e2c50632a1fd5323cda069558c4ba8093880b247093c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.05542",
    "kind": "arxiv",
    "version": 1
  }
}