Pith Number

pith:4EWP5BVO

pith:1998:4EWP5BVODEZSMCEP2LQTPSUMAI

not attested not anchored not stored refs pending

WFPC2 Observations of Leo A: A Predominantly Young Galaxy within the Local Group

A.A. Cole, A. Saha, D. Hurley-Keller, E.D. Skillman, Eline Tolstoy, J.G. Hoessel, J.S. Gallagher, Mario Mateo, R.C. Dohm-Palmer

arxiv:astro-ph/9805268 v1 · 1998-05-20 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4EWP5BVODEZSMCEP2LQTPSUMAI}

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	2026-05-18T01:07:37.422182Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e12cfe86ae193326088fd2e137ca8c020a4a107379e0a74aaaca1fb543adb39d

Aliases

arxiv: astro-ph/9805268 · arxiv_version: astro-ph/9805268v1 · doi: 10.48550/arxiv.astro-ph/9805268 · pith_short_12: 4EWP5BVODEZS · pith_short_16: 4EWP5BVODEZSMCEP · pith_short_8: 4EWP5BVO

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/4EWP5BVODEZSMCEP2LQTPSUMAI \
  | 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: e12cfe86ae193326088fd2e137ca8c020a4a107379e0a74aaaca1fb543adb39d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "573fb27a7c1a4fe9ec91b21dcc258a6e0e748661b157c2f7acc18d39668a2037",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-05-20T15:36:30Z",
    "title_canon_sha256": "6cb6f954fb4d85a4a6e6ce1d16792b83778cd07bce9f8bce1b85966b91b6736f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9805268",
    "kind": "arxiv",
    "version": 1
  }
}