Pith Number

pith:EHJTPIKB

pith:2012:EHJTPIKBC6H37BMAMUPPVY62JM

not attested not anchored not stored refs pending

The ancient stellar population of M32: RR Lyr Variable stars confirmed

A. Saha, E. Tolstoy, G. Clementini, G. Fiorentino, R. Contreras Ramos

arxiv:1201.0439 v1 · 2012-01-02 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EHJTPIKBC6H37BMAMUPPVY62JM}

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	2026-05-18T01:58:59.000731Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

21d337a141178fbf8580651efae3da4b04289b0cd44ee339dbd1d84308014419

Aliases

arxiv: 1201.0439 · arxiv_version: 1201.0439v1 · doi: 10.48550/arxiv.1201.0439 · pith_short_12: EHJTPIKBC6H3 · pith_short_16: EHJTPIKBC6H37BMA · pith_short_8: EHJTPIKB

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/EHJTPIKBC6H37BMAMUPPVY62JM \
  | 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: 21d337a141178fbf8580651efae3da4b04289b0cd44ee339dbd1d84308014419

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a038823c222c0a73f99bf5918fc1caf18e0621dec2a85b1b0f046a4ae646d4ee",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-01-02T09:24:01Z",
    "title_canon_sha256": "3231513c4f8527913f101eb8466bd355badac6011890c53892f43bdcf0ca8985"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.0439",
    "kind": "arxiv",
    "version": 1
  }
}