Pith Number

pith:HKNKBPGR

pith:1997:HKNKBPGR4FXR3FUZZ3TGCEAEC5

not attested not anchored not stored refs pending

ICM masses in nearby and distant clusters of galaxies

Hironobu Matsumoto, Hiroshi Tomida, John P. Hughes, Katsuji Koyama, Makoto Hattori, Takeshi Go Tsuru, Yashushi Fukazawa

arxiv:astro-ph/9711353 v1 · 1997-11-28 · 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{HKNKBPGR4FXR3FUZZ3TGCEAEC5}

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	2026-07-04T14:15:34.363704Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3a9aa0bcd1e16f1d9699cee6611004175c5205bd46100f8e89dc888b80cb4b7a

Aliases

arxiv: astro-ph/9711353 · arxiv_version: astro-ph/9711353v1 · doi: 10.48550/arxiv.astro-ph/9711353 · pith_short_12: HKNKBPGR4FXR · pith_short_16: HKNKBPGR4FXR3FUZ · pith_short_8: HKNKBPGR

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/HKNKBPGR4FXR3FUZZ3TGCEAEC5 \
  | 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: 3a9aa0bcd1e16f1d9699cee6611004175c5205bd46100f8e89dc888b80cb4b7a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7496b59add4bd26d1f790eee677fad3931a862e556a6b582a9288665f62930d6",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-11-28T17:00:35Z",
    "title_canon_sha256": "a7bbba57268542f9b63b359dc597c55f88c636f1a17267fd41d9c97e658fec49"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9711353",
    "kind": "arxiv",
    "version": 1
  }
}