Pith Number

pith:3XFIATCW

pith:2020:3XFIATCW2B3EDTDOFD6BKBC325

not attested not anchored not stored refs pending

Integral points on the congruent number curve

Stephanie Chan

arxiv:2004.03331 v2 · 2020-04-07 · math.NT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3XFIATCW2B3EDTDOFD6BKBC325}

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	2026-07-05T05:15:07.982113Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ddca804c56d07641cc6e28fc15045bd74c8bd77faa723117dc2e47263140e8d4

Aliases

arxiv: 2004.03331 · arxiv_version: 2004.03331v2 · doi: 10.48550/arxiv.2004.03331 · pith_short_12: 3XFIATCW2B3E · pith_short_16: 3XFIATCW2B3EDTDO · pith_short_8: 3XFIATCW

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/3XFIATCW2B3EDTDOFD6BKBC325 \
  | 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: ddca804c56d07641cc6e28fc15045bd74c8bd77faa723117dc2e47263140e8d4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bbc7bd7aa9981f64b86c7877eaffa3ac20c5aa6985577cd73e0f295bf93f3eba",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NT",
    "submitted_at": "2020-04-07T13:10:06Z",
    "title_canon_sha256": "7068db7f77f8681a1a316205a7e0315dd7255a22ffddc9380322e4ce59065c11"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.03331",
    "kind": "arxiv",
    "version": 2
  }
}