Pith Number

pith:RFCXD2WW

pith:2012:RFCXD2WWBUPQIBWZ6AXVOQDRZO

not attested not anchored not stored refs pending

Black-hole masses of type 1 AGN in the XMM-Newton bright serendipitous survey

A. Caccianiga, E. Marchese, P. Severgnini, R. Della Ceca, R. Fanali, S. Mateos

arxiv:1212.3483 v1 · 2012-12-14 · 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{RFCXD2WWBUPQIBWZ6AXVOQDRZO}

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	2026-05-18T01:52:38.189910Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

894571ead60d1f0406d9f02f574071cb9e8d65651db1e5c03fa9d9d2483c1e8c

Aliases

arxiv: 1212.3483 · arxiv_version: 1212.3483v1 · doi: 10.48550/arxiv.1212.3483 · pith_short_12: RFCXD2WWBUPQ · pith_short_16: RFCXD2WWBUPQIBWZ · pith_short_8: RFCXD2WW

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/RFCXD2WWBUPQIBWZ6AXVOQDRZO \
  | 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: 894571ead60d1f0406d9f02f574071cb9e8d65651db1e5c03fa9d9d2483c1e8c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "696b07aa3f0ea39588e1e581d3273eca768b575c5460370a73c9874ef4a88ebe",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-12-14T14:38:41Z",
    "title_canon_sha256": "5edc205e636031be655c94e3571bae23e1786d69b546fc922dc470ec14936412"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.3483",
    "kind": "arxiv",
    "version": 1
  }
}