Pith Number

pith:ETJEAMW6

pith:2025:ETJEAMW6OQZXNERNME547RTWJQ

not attested not anchored not stored refs pending

Exploring Formal Math on the Blockchain: An Explorer for Proofgold

Cezary Kaliszyk, Chad E. Brown, Josef Urban

arxiv:2509.08267 v1 · 2025-09-10 · cs.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ETJEAMW6OQZXNERNME547RTWJQ}

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	2026-07-05T12:08:26.575141Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

24d24032de743376922d613bcfc6764c376e59eb01ca2d503f685c54420c25fa

Aliases

arxiv: 2509.08267 · arxiv_version: 2509.08267v1 · doi: 10.48550/arxiv.2509.08267 · pith_short_12: ETJEAMW6OQZX · pith_short_16: ETJEAMW6OQZXNERN · pith_short_8: ETJEAMW6

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/ETJEAMW6OQZXNERNME547RTWJQ \
  | 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: 24d24032de743376922d613bcfc6764c376e59eb01ca2d503f685c54420c25fa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a94f2ad266fb31557e46615177a75917416021dda8ad3ce9d2966a620c8ac790",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2025-09-10T03:51:43Z",
    "title_canon_sha256": "0b54aafaab9398db057972bfa97dfd1f7af75384bb4af2aaf0983ee83ac6baa2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2509.08267",
    "kind": "arxiv",
    "version": 1
  }
}