Pith Number

pith:K4KVKNMD

pith:2006:K4KVKNMDKZK4JFTGSKKHGOL2CL

not attested not anchored not stored refs pending

Upper limits on the mass of supermassive black holes from HST/STIS archival data

(2) Groningen University, (3) University of Hertfordshire, A. Beifiori (1), A. Pizzella (1), E. Dalla Bonta` (1), E. M. Corsini (1), F. Bertola (1) ((1) Padua University, Italy, L. Coccato (2), M. Sarzi (3), The Netherlands, UK)

arxiv:astro-ph/0610624 v1 · 2006-10-20 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{K4KVKNMDKZK4JFTGSKKHGOL2CL}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T01:40:29.203379Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

57155535835655c49666929473397a12e96807ed684757a29a5b20d519d1569a

Aliases

arxiv: astro-ph/0610624 · arxiv_version: astro-ph/0610624v1 · doi: 10.48550/arxiv.astro-ph/0610624 · pith_short_12: K4KVKNMDKZK4 · pith_short_16: K4KVKNMDKZK4JFTG · pith_short_8: K4KVKNMD

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/K4KVKNMDKZK4JFTGSKKHGOL2CL \
  | 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: 57155535835655c49666929473397a12e96807ed684757a29a5b20d519d1569a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cb3332e95c242348759a2d1269d0f753aa8f0d1ec6d3e0b55add03b2144c7e8c",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-10-20T15:28:22Z",
    "title_canon_sha256": "b848b5baac639a2e8276eda3db8502a8c07a7df26d1c7d35037a8c7e9285e89d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0610624",
    "kind": "arxiv",
    "version": 1
  }
}