Pith Number

pith:QB75VQXD

pith:2025:QB75VQXDZBN6FGKAZ56OO23IES

not attested not anchored not stored refs pending

Proof-Carrying Numbers (PCN): A Protocol for Trustworthy Numeric Answers from LLMs via Claim Verification

Aivin V. Solatorio

arxiv:2509.06902 v1 · 2025-09-08 · cs.CL · cs.CR · cs.DB · 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{QB75VQXDZBN6FGKAZ56OO23IES}

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	2026-07-05T12:06:54.798733Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

807fdac2e3c85be29940cf7ce76b6824a1f17302e86ed03d3b8cefa3ab0bc550

Aliases

arxiv: 2509.06902 · arxiv_version: 2509.06902v1 · doi: 10.48550/arxiv.2509.06902 · pith_short_12: QB75VQXDZBN6 · pith_short_16: QB75VQXDZBN6FGKA · pith_short_8: QB75VQXD

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/QB75VQXDZBN6FGKAZ56OO23IES \
  | 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: 807fdac2e3c85be29940cf7ce76b6824a1f17302e86ed03d3b8cefa3ab0bc550

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8118ba3bea1dd64a48d05fe4c3b4690624adfa3f096af4bec6c8090b056e5805",
    "cross_cats_sorted": [
      "cs.CR",
      "cs.DB",
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2025-09-08T17:20:16Z",
    "title_canon_sha256": "c4c45ced1505124d351ae902e6dc6110bdd60eb85dd3e7e7ea10f736379c0461"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2509.06902",
    "kind": "arxiv",
    "version": 1
  }
}