Pith Number

pith:HY7GTZ6Q

pith:2012:HY7GTZ6QPITL52OJ64SDC2EL3L

not attested not anchored not stored refs pending

The horizontal branch luminosity vs metallicity in M31 globular clusters

Carla Cacciari (1), Flavio Fusi Pecci (1), Italy), Luciana Federici (1), Michele Bellazzini (1), Sibilla Perina (1) ((1) INAF-Osservatorio Astronomico di Bologna, Silvia Galleti (1)

arxiv:1207.4731 v2 · 2012-07-19 · astro-ph.GA · 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{HY7GTZ6QPITL52OJ64SDC2EL3L}

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	2026-05-18T01:56:16.162214Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3e3e69e7d07a26bee9c9f72431688bdacb3b60fdb11501e01bb04db929b76dcb

Aliases

arxiv: 1207.4731 · arxiv_version: 1207.4731v2 · doi: 10.48550/arxiv.1207.4731 · pith_short_12: HY7GTZ6QPITL · pith_short_16: HY7GTZ6QPITL52OJ · pith_short_8: HY7GTZ6Q

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/HY7GTZ6QPITL52OJ64SDC2EL3L \
  | 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: 3e3e69e7d07a26bee9c9f72431688bdacb3b60fdb11501e01bb04db929b76dcb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dc8ffc50295cd8c38998ad00e377e529d956f91b9e82a9b3fab20f7b795a07b1",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2012-07-19T16:54:14Z",
    "title_canon_sha256": "09cc951e658cf2ddd3060849ae421f4ccf52b931e52bc5050a0c3ef1a5911ef8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.4731",
    "kind": "arxiv",
    "version": 2
  }
}