Pith Number

pith:5CUOFHPW

pith:2001:5CUOFHPWJX2RALKMKX743HD4BM

not attested not anchored not stored refs pending

Keck Spectroscopy of Dwarf Elliptical Galaxies in the Virgo Cluster

M. Geha, P. Guhathakurta (UCSC), R. van der Marel (STScI)

arxiv:astro-ph/0107010 v1 · 2001-07-02 · 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{5CUOFHPWJX2RALKMKX743HD4BM}

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	2026-05-18T00:37:17.835283Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e8a8e29df64df5102d4c55ffcd9c7c0b36e0774eaff5cb715aeb6b9bab704a4a

Aliases

arxiv: astro-ph/0107010 · arxiv_version: astro-ph/0107010v1 · doi: 10.48550/arxiv.astro-ph/0107010 · pith_short_12: 5CUOFHPWJX2R · pith_short_16: 5CUOFHPWJX2RALKM · pith_short_8: 5CUOFHPW

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/5CUOFHPWJX2RALKMKX743HD4BM \
  | 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: e8a8e29df64df5102d4c55ffcd9c7c0b36e0774eaff5cb715aeb6b9bab704a4a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f54f55fa96c1c7b42104ddbb16b2432bfc8a18810b5cfedf03cf40e68ffae490",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-07-02T00:02:25Z",
    "title_canon_sha256": "93ff8866af6d6b3b6ef8facc578b9ecdd2c08551c32cdb9e5019cf815f264d99"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0107010",
    "kind": "arxiv",
    "version": 1
  }
}