Pith Number

pith:JRKRMQXX

pith:2007:JRKRMQXXMYWSP5QET3GTHCVVC2

not attested not anchored not stored refs pending

Leo A: A Late-Blooming Survivor of the Epoch of Reionization in the Local Group

A. A. Cole, A. Aparicio, A. E. Dolphin, A. Saha, C. Gallart, D. R. Weisz, E. D. Skillman, E. Tolstoy, J. S. Gallagher III, P. B. Stetson, S. L. Hidalgo

arxiv:astro-ph/0702646 v1 · 2007-02-23 · 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{JRKRMQXXMYWSP5QET3GTHCVVC2}

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	2026-07-04T17:07:42.506520Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4c551642f7662d27f6049ecd338ab516a6aeeec17a92ce132928e34f9a73e339

Aliases

arxiv: astro-ph/0702646 · arxiv_version: astro-ph/0702646v1 · doi: 10.48550/arxiv.astro-ph/0702646 · pith_short_12: JRKRMQXXMYWS · pith_short_16: JRKRMQXXMYWSP5QE · pith_short_8: JRKRMQXX

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/JRKRMQXXMYWSP5QET3GTHCVVC2 \
  | 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: 4c551642f7662d27f6049ecd338ab516a6aeeec17a92ce132928e34f9a73e339

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ee394e6c4e65afc6fe3f939063392377df4f96e4702acf4465044affa5430061",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-02-23T21:01:15Z",
    "title_canon_sha256": "65e33c7e3137724275774bb4b68c8adca7c5cfab2727e9f340a7fabf50e7f063"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0702646",
    "kind": "arxiv",
    "version": 1
  }
}