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 What is a Pith Number?

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

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
  }
}