Pith Number

pith:GJPQKWF6

pith:2013:GJPQKWF6HNESYV3TQLUUHLRGE5

not attested not anchored not stored refs pending

Colours of isolated galaxies selected from the Two-Micron All-Sky Survey

O.Melnyk, S.Mitronova, V. Karachentseva

arxiv:1311.4391 v2 · 2013-11-15 · 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{GJPQKWF6HNESYV3TQLUUHLRGE5}

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	2026-05-18T01:46:23.620759Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

325f0558be3b492c577382e943ae2627644b1384b8813c8884d18e06f4b47af3

Aliases

arxiv: 1311.4391 · arxiv_version: 1311.4391v2 · doi: 10.48550/arxiv.1311.4391 · pith_short_12: GJPQKWF6HNES · pith_short_16: GJPQKWF6HNESYV3T · pith_short_8: GJPQKWF6

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/GJPQKWF6HNESYV3TQLUUHLRGE5 \
  | 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: 325f0558be3b492c577382e943ae2627644b1384b8813c8884d18e06f4b47af3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cb969c0d9354b19d9503acc030273840549c1b810e3123f79e26cefbd7587760",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2013-11-15T15:05:43Z",
    "title_canon_sha256": "fa69e0c71e98687d9d495a78ebdd51a13238801bde955fece340db49a5cfa809"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.4391",
    "kind": "arxiv",
    "version": 2
  }
}