Pith Number

pith:TZADY4KH

pith:2026:TZADY4KHZ7H2AU7CEXIV4FVQTU

not attested not anchored not stored refs pending

HALLMARK: Diagnosing Three Failure Modes in LLM Citation Verifiers

Patrik Reizinger, Wieland Brendel

arxiv:2607.18360 v1 · 2026-07-20 · cs.CR · cs.AI · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TZADY4KHZ7H2AU7CEXIV4FVQTU}

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	2026-07-22T00:22:43.416532Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9e403c7147cfcfa053e225d15e16b09d316bfe3f1bc6244f4708144e4e9e1053

Aliases

arxiv: 2607.18360 · arxiv_version: 2607.18360v1 · doi: 10.48550/arxiv.2607.18360 · pith_short_12: TZADY4KHZ7H2 · pith_short_16: TZADY4KHZ7H2AU7C · pith_short_8: TZADY4KH

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/TZADY4KHZ7H2AU7CEXIV4FVQTU \
  | 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: 9e403c7147cfcfa053e225d15e16b09d316bfe3f1bc6244f4708144e4e9e1053

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3a036c0dc1bd65a088f178a858c2f731ac85bee90b994a21d4206e1ff3db10f7",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2026-07-20T13:21:27Z",
    "title_canon_sha256": "328ff62ee07c9317419a4d2037c896ea56cdb71a51870a5f5e3d5210643dcbea"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.18360",
    "kind": "arxiv",
    "version": 1
  }
}