Pith Number

pith:6ELXXSQY

pith:2009:6ELXXSQYU3PBAI2J6JOFOWJTG7

not attested not anchored not stored refs pending

The Millennium Galaxy Catalogue: The $M_{bh}$--$L_{spheroid}$ derived supermassive black hole mass function

Alister W. Graham, Jochen Liske, Marina Vika, Simon P. Driver

arxiv:0908.2102 v1 · 2009-08-14 · astro-ph.CO · 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{6ELXXSQYU3PBAI2J6JOFOWJTG7}

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	2026-05-18T02:12:34.127909Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f1177bca18a6de102349f25c57593337e3dc6be911041abf1e5dcce49f59ba7d

Aliases

arxiv: 0908.2102 · arxiv_version: 0908.2102v1 · doi: 10.48550/arxiv.0908.2102 · pith_short_12: 6ELXXSQYU3PB · pith_short_16: 6ELXXSQYU3PBAI2J · pith_short_8: 6ELXXSQY

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/6ELXXSQYU3PBAI2J6JOFOWJTG7 \
  | 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: f1177bca18a6de102349f25c57593337e3dc6be911041abf1e5dcce49f59ba7d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "afcc67712e82d91fe467c3fa4d53cb3b3be845df6ce03e54ebab935ff7303916",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-08-14T17:30:21Z",
    "title_canon_sha256": "f063ef4c2ca2507a67b3023c93e3d301f8d947d5e3f10b80030d4fc9491f5f62"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.2102",
    "kind": "arxiv",
    "version": 1
  }
}