Pith Number

pith:MAN2QTNY

pith:2002:MAN2QTNYM7HVJDGZ6C23ZTNNXK

not attested not anchored not stored refs pending

Accretion onto the Supermassive Black Hole in M87

Andrew C. Fabian (IoA), Andrew J. Young (Maryland), Andrew S. Wilson, Steven W. Allen, Tiziana Di Matteo (MPA)

arxiv:astro-ph/0202238 v3 · 2002-02-12 · 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{MAN2QTNYM7HVJDGZ6C23ZTNNXK}

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	2026-07-04T17:25:11.641415Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

601ba84db867cf548cd9f0b5bccdadba968305cf92484d2d7be4468bd57c4825

Aliases

arxiv: astro-ph/0202238 · arxiv_version: astro-ph/0202238v3 · doi: 10.48550/arxiv.astro-ph/0202238 · pith_short_12: MAN2QTNYM7HV · pith_short_16: MAN2QTNYM7HVJDGZ · pith_short_8: MAN2QTNY

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/MAN2QTNYM7HVJDGZ6C23ZTNNXK \
  | 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: 601ba84db867cf548cd9f0b5bccdadba968305cf92484d2d7be4468bd57c4825

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ee8efb3be1d8e2e7437217a76b26a2328248a79b01dd941f4f44253091c0fabd",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-02-12T19:30:23Z",
    "title_canon_sha256": "08e29b60bce9e212d5a243ca0825ec8ec6e26d5f5a73a2c13eae6380ed683489"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0202238",
    "kind": "arxiv",
    "version": 3
  }
}