Pith Number

pith:Q4WVQSUT

pith:2012:Q4WVQSUT2BRMQQJOJPIBRXVONZ

not attested not anchored not stored refs pending

The extensive age gradient of the Carina dwarf galaxy

Eline Tolstoy, Giuseppina Battaglia, Mario Mateo, Michael Irwin, Thomas de Boer

arxiv:1211.4875 v1 · 2012-11-20 · astro-ph.CO · 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{Q4WVQSUT2BRMQQJOJPIBRXVONZ}

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	2026-05-18T01:53:02.232074Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

872d584a93d062c8412e4bd018deae6e7e530176ddf26aa9e5d7357c73f70bcb

Aliases

arxiv: 1211.4875 · arxiv_version: 1211.4875v1 · doi: 10.48550/arxiv.1211.4875 · pith_short_12: Q4WVQSUT2BRM · pith_short_16: Q4WVQSUT2BRMQQJO · pith_short_8: Q4WVQSUT

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/Q4WVQSUT2BRMQQJOJPIBRXVONZ \
  | 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: 872d584a93d062c8412e4bd018deae6e7e530176ddf26aa9e5d7357c73f70bcb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "109161d779548bcbf26b3f20fae5bddb3daff3b3ca67834da3bfcd8c20880bfa",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-11-20T21:00:06Z",
    "title_canon_sha256": "5af4173dd73e9c1b01aed37483fe5c83d5d325fbfd74757e2fe8cd94720126eb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.4875",
    "kind": "arxiv",
    "version": 1
  }
}