Pith Number

pith:MVPFGZ2D

pith:1999:MVPFGZ2DPQ3V3RFD6DXL4ZRWVO

not attested not anchored not stored refs pending

The Northern Sky Optical Cluster Survey I: Detection of Galaxy Clusters in DPOSS

R. R. DeCarvalho, R. R. Gal, S. C. Odewahn, S. G. Djorgovski, V. E. Margoniner

arxiv:astro-ph/9910173 v1 · 1999-10-09 · astro-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MVPFGZ2DPQ3V3RFD6DXL4ZRWVO}

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	2026-05-18T01:07:35.971200Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

655e5367437c375dc4a3f0eebe6636ab9161eaff8d7f33cc0ce9ab21cfbbd483

Aliases

arxiv: astro-ph/9910173 · arxiv_version: astro-ph/9910173v1 · doi: 10.48550/arxiv.astro-ph/9910173 · pith_short_12: MVPFGZ2DPQ3V · pith_short_16: MVPFGZ2DPQ3V3RFD · pith_short_8: MVPFGZ2D

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/MVPFGZ2DPQ3V3RFD6DXL4ZRWVO \
  | 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: 655e5367437c375dc4a3f0eebe6636ab9161eaff8d7f33cc0ce9ab21cfbbd483

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d00ebb0d24d47c948a5172d6ff53ec083c2c6f968d1fe2339d9cc376ca653490",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-10-09T00:12:49Z",
    "title_canon_sha256": "11a22b7651d9eadced9bc9e054ec61f2cf80cc3705fa220e331917b5b33575eb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9910173",
    "kind": "arxiv",
    "version": 1
  }
}