Pith Number

pith:TDDVTBTT

pith:2011:TDDVTBTTHJGNKXAQVRDO4SCTYD

not attested not anchored not stored refs pending

The Spin of the Supermassive Black Hole in NGC 3783

A.C. Fabian, C.S. Reynolds, J.C. Lee, J.M. Miller, K. Iwasawa, K. Nandra, L.W. Brenneman, M.A. Nowak, M. Trippe, M. Volonteri, R.C. Reis, R.F. Mushotzky

arxiv:1104.1172 v2 · 2011-04-06 · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TDDVTBTTHJGNKXAQVRDO4SCTYD}

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.

Cited by

1 paper in Pith

Simulation-Based Prediction of Black Hole Fe K$\alpha$ Line Profiles

Receipt and verification

First computed	2026-05-18T02:02:37.068988Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

98c75986733a4cd55c10ac46ee4853c0c0db30bc7eae2a55cf129b11702d4130

Aliases

arxiv: 1104.1172 · arxiv_version: 1104.1172v2 · doi: 10.48550/arxiv.1104.1172 · pith_short_12: TDDVTBTTHJGN · pith_short_16: TDDVTBTTHJGNKXAQ · pith_short_8: TDDVTBTT

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/TDDVTBTTHJGNKXAQVRDO4SCTYD \
  | 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: 98c75986733a4cd55c10ac46ee4853c0c0db30bc7eae2a55cf129b11702d4130

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e9ea512456ec396cba9be368f5c08bc68a21a0b181f64f59b1a388d18fc640b7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2011-04-06T20:00:00Z",
    "title_canon_sha256": "58a3c36502cba53f44b9c0e8fddbf7d5791e7089a16657f15903709fb07688a4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.1172",
    "kind": "arxiv",
    "version": 2
  }
}