Pith Number

pith:4CO4TH5C

pith:2026:4CO4TH5CD4NJL4X5HQ5D6ZU6RA

not attested not anchored not stored refs pending

Know Your Source: A Public Knowledge Store for Media Background Checks

Benjamin Nichols, Michael Schlichtkrull, Nedjma Ousidhoum

arxiv:2607.02383 v1 · 2026-07-02 · 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{4CO4TH5CD4NJL4X5HQ5D6ZU6RA}

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	2026-07-03T01:17:57.293487Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e09dc99fa21f1a95f2fd3c3a3f669e883913e5ed6a653af52440bf34d0c6e234

Aliases

arxiv: 2607.02383 · arxiv_version: 2607.02383v1 · doi: 10.48550/arxiv.2607.02383 · pith_short_12: 4CO4TH5CD4NJ · pith_short_16: 4CO4TH5CD4NJL4X5 · pith_short_8: 4CO4TH5C

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/4CO4TH5CD4NJL4X5HQ5D6ZU6RA \
  | 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: e09dc99fa21f1a95f2fd3c3a3f669e883913e5ed6a653af52440bf34d0c6e234

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "59278aa162dc88fe650045b934c92509efb6a3b7a49a8eb59944567886dd4edd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2026-07-02T16:20:28Z",
    "title_canon_sha256": "7547f7132cc12a663618e98e9a955be0f2b6bb611a780c879eff6ec051dfafb5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.02383",
    "kind": "arxiv",
    "version": 1
  }
}