Pith Number

pith:MPMV2LBK

pith:2012:MPMV2LBKW6TLNEQKKPJ5AJRAVQ

not attested not anchored not stored refs pending

The helium content of globular clusters: NGC6121 (M4)

D. Geisler, G. Piotto, R. Gratton, S. Villanova

arxiv:1201.3241 v1 · 2012-01-16 · 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{MPMV2LBKW6TLNEQKKPJ5AJRAVQ}

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	2026-05-18T01:58:48.809542Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

63d95d2c2ab7a6b6920a53d3d02620ac141b24b3d58dbaf0a5726f8d2f6b374a

Aliases

arxiv: 1201.3241 · arxiv_version: 1201.3241v1 · doi: 10.48550/arxiv.1201.3241 · pith_short_12: MPMV2LBKW6TL · pith_short_16: MPMV2LBKW6TLNEQK · pith_short_8: MPMV2LBK

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/MPMV2LBKW6TLNEQKKPJ5AJRAVQ \
  | 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: 63d95d2c2ab7a6b6920a53d3d02620ac141b24b3d58dbaf0a5726f8d2f6b374a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f2cb916047c49d1c54a9e00a9606de80d7020eacefc7c5f07b675368db35b93a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2012-01-16T13:01:02Z",
    "title_canon_sha256": "6f556bca6c25246dc65adbd35a246575da333cb8287c8f3d7a6169a018b0bc49"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.3241",
    "kind": "arxiv",
    "version": 1
  }
}