Pith Number

pith:4GIPGDT2

pith:2025:4GIPGDT2QQJFXUQ72JBH7NQ3PC

not attested not anchored not stored refs pending

PolarCat: Catalog of polars, low-accretion rate polars, and candidate objects

Axel D. Schwope

arxiv:2505.10337 v1 · 2025-05-15 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4GIPGDT2QQJFXUQ72JBH7NQ3PC}

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	2026-07-05T11:03:37.085290Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e190f30e7a84125bd21fd2427fb61b789beca3257c8805535381afd2c33347a1

Aliases

arxiv: 2505.10337 · arxiv_version: 2505.10337v1 · doi: 10.48550/arxiv.2505.10337 · pith_short_12: 4GIPGDT2QQJF · pith_short_16: 4GIPGDT2QQJFXUQ7 · pith_short_8: 4GIPGDT2

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/4GIPGDT2QQJFXUQ72JBH7NQ3PC \
  | 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: e190f30e7a84125bd21fd2427fb61b789beca3257c8805535381afd2c33347a1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ff4ed23bc4bf2821a5e5d7da03218f76cba33aae58d69df2c5c6732317e34fe3",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2025-05-15T14:26:24Z",
    "title_canon_sha256": "5bb4f086e7bd2a913008bd480700eecd42ab4e037e2900726b10dd68d821ea29"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2505.10337",
    "kind": "arxiv",
    "version": 1
  }
}