Pith Number

pith:B6QJK6SY

pith:2009:B6QJK6SY4HIVYI7IRUZ4I64GZZ

not attested not anchored not stored refs pending

M32: Is There An Ancient, Metal-Poor Population?

A. Dressler, A. Monachesi, A. Saha, C. J. Grillmair, E. Tolstoy, G. Fiorentino, K. Mighell, S. Trager, T. Lauer, W. L. Freedman

arxiv:0909.0202 v1 · 2009-09-01 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{B6QJK6SY4HIVYI7IRUZ4I64GZZ}

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	2026-05-18T02:34:36.915224Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0fa0957a58e1d15c23e88d33c47b86ce6dcb7b60a498d5037a397bfa32b29718

Aliases

arxiv: 0909.0202 · arxiv_version: 0909.0202v1 · doi: 10.48550/arxiv.0909.0202 · pith_short_12: B6QJK6SY4HIV · pith_short_16: B6QJK6SY4HIVYI7I · pith_short_8: B6QJK6SY

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/B6QJK6SY4HIVYI7IRUZ4I64GZZ \
  | 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: 0fa0957a58e1d15c23e88d33c47b86ce6dcb7b60a498d5037a397bfa32b29718

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e2bb5777f1567709d4b13c8f451e695024c5823684c83fa7bdd30343cdb7c9cf",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-09-01T15:00:00Z",
    "title_canon_sha256": "f0c7cc67238cff188f348e4c49468bf4ccb1d15d46640427846a2daa1ad7ab7e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.0202",
    "kind": "arxiv",
    "version": 1
  }
}