Pith Number

pith:7EQDYNO6

pith:2008:7EQDYNO6RKZ5WENIJULDAOVOR3

not attested not anchored not stored refs pending

Upper Limits on the Masses of 105 Supermassive Black Holes from Hubble Space Telescope/Space Telescope Imaging Spectrograph Archival Data

(2) Centre for Astrophysics Research, (3) Max-Planck-Institut fuer extraterrestrische Physik, A. Beifiori (1), A. Pizzella (1), E. Dalla Bonta' (1), E. M. Corsini (1), F. Bertola (1) ((1) Dipartimento di Astronomia, Garching bei Muenchen, Germany), Hatfield, Italy, L. Coccato (3), M. Sarzi (2), UK, Universita' degli Studi di Padova, University of Hertfordshire

arxiv:0809.5103 v2 · 2008-09-30 · 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{7EQDYNO6RKZ5WENIJULDAOVOR3}

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	2026-05-18T02:35:14.615592Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f9203c35de8ab3db11a84d16303aae8eee21e662b30f413cbab67eba46ae4855

Aliases

arxiv: 0809.5103 · arxiv_version: 0809.5103v2 · doi: 10.48550/arxiv.0809.5103 · pith_short_12: 7EQDYNO6RKZ5 · pith_short_16: 7EQDYNO6RKZ5WENI · pith_short_8: 7EQDYNO6

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/7EQDYNO6RKZ5WENIJULDAOVOR3 \
  | 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: f9203c35de8ab3db11a84d16303aae8eee21e662b30f413cbab67eba46ae4855

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6c9f503ef1e480401c15866682e4e54a5d25b6710a67d4623975fe816345a2ff",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-09-30T14:16:29Z",
    "title_canon_sha256": "c9d7a45236c125ec09cc21606e29e6ac16fc7125184374de91fb3dc964de4dd2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0809.5103",
    "kind": "arxiv",
    "version": 2
  }
}