Pith Number

pith:C4MXXI3N

pith:2015:C4MXXI3NWRYJMYH6WX7NIZHQIU

not attested not anchored not stored refs pending

Studies of the stellar populations of galaxies using two-color diagrams

Alexander S. Gusev, Alexandra P. Novikova, Maria S. Khramtsova, Olga V. Ezhkova, Svetlana A. Guslyakova, Vasily V. Bruevich

arxiv:1509.02356 v1 · 2015-09-08 · 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{C4MXXI3NWRYJMYH6WX7NIZHQIU}

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	2026-05-18T01:33:41.097732Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

17197ba36db4709660feb5fed464f0450a1ebc4a948c770a64c058734e9c532e

Aliases

arxiv: 1509.02356 · arxiv_version: 1509.02356v1 · doi: 10.48550/arxiv.1509.02356 · pith_short_12: C4MXXI3NWRYJ · pith_short_16: C4MXXI3NWRYJMYH6 · pith_short_8: C4MXXI3N

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/C4MXXI3NWRYJMYH6WX7NIZHQIU \
  | 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: 17197ba36db4709660feb5fed464f0450a1ebc4a948c770a64c058734e9c532e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bf10e1b74a05b2edc146224b9f1d3510d0e8d182f8eeec8b52b616d4f6aad3ae",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-09-08T13:15:59Z",
    "title_canon_sha256": "b650b80b99e9ee2edbd6f8cd7578bcc370b242afdbfcc0e494a3f6c328a3cec1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.02356",
    "kind": "arxiv",
    "version": 1
  }
}