Pith Number

pith:DGALQEGS

pith:2020:DGALQEGS36DN73A2OOYZ3Y5YPU

not attested not anchored not stored refs pending

On structure and kinematics of the Virgo cluster of galaxies

Igor D. Karachentsev, Olga G. Kashibadze, Valentina E. Karachentseva

arxiv:2002.12820 v1 · 2020-02-28 · 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{DGALQEGS36DN73A2OOYZ3Y5YPU}

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	2026-07-05T00:50:16.079582Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1980b810d2df86dfec1a73b19de3b87d30f3c162bdf4c652b42b59f2dda9b564

Aliases

arxiv: 2002.12820 · arxiv_version: 2002.12820v1 · doi: 10.48550/arxiv.2002.12820 · pith_short_12: DGALQEGS36DN · pith_short_16: DGALQEGS36DN73A2 · pith_short_8: DGALQEGS

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/DGALQEGS36DN73A2OOYZ3Y5YPU \
  | 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: 1980b810d2df86dfec1a73b19de3b87d30f3c162bdf4c652b42b59f2dda9b564

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4650d80d731e8f2e9ea5802d4bb9f1d6adc7600d7b366c17cc7cc7cfdb4a95dd",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2020-02-28T15:47:50Z",
    "title_canon_sha256": "fc6aca128a341cd5f73108bc5243d9b04bae468c09d874e78b322712a2cc20d2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2002.12820",
    "kind": "arxiv",
    "version": 1
  }
}