Pith Number

pith:IEELANFI

pith:2012:IEELANFIMLXEUWBMQIZHOMVG6R

not attested not anchored not stored refs pending

The Ubiquity of Supermassive Black Holes in the Hubble Sequence

Dominic Clancy, Francine R. Marleau, Matteo Bianconi

arxiv:1212.0980 v2 · 2012-12-05 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IEELANFIMLXEUWBMQIZHOMVG6R}

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	2026-05-18T01:52:47.532582Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4108b034a862ee4a582c82327732a6f44519c99d18fb1362aa35c31de9e054f9

Aliases

arxiv: 1212.0980 · arxiv_version: 1212.0980v2 · doi: 10.48550/arxiv.1212.0980 · pith_short_12: IEELANFIMLXE · pith_short_16: IEELANFIMLXEUWBM · pith_short_8: IEELANFI

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/IEELANFIMLXEUWBMQIZHOMVG6R \
  | 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: 4108b034a862ee4a582c82327732a6f44519c99d18fb1362aa35c31de9e054f9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6234fb1c13d9a5fdd8d862c7b57fb9db32130a719366610f55db57409850e4c3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-12-05T09:47:49Z",
    "title_canon_sha256": "f633068246024cc8cdd5cb69124fc00270bc5abe293f41066d463f9ee2ddc7af"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.0980",
    "kind": "arxiv",
    "version": 2
  }
}