Pith Number

pith:PFK3HCKN

pith:2013:PFK3HCKN4GO3SFBGGN5RQY6L4O

not attested not anchored not stored refs pending

Constraining Sub-Parsec Binary Supermassive Black Holes in Quasars with Multi-Epoch Spectroscopy. II. The Population with Kinematically Offset Broad Balmer Emission Lines

Abraham Loeb (Harvard), Fuyan Bian (ANU), Scott Tremaine (IAS), Xin Liu (UCLA), Yue Shen (Carnegie)

arxiv:1312.6694 v2 · 2013-12-23 · 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{PFK3HCKN4GO3SFBGGN5RQY6L4O}

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	2026-05-18T01:45:42.296477Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7955b3894de19db91426337b1863cbe3a86b24f41d3b38cd564b5a8ba04e68a8

Aliases

arxiv: 1312.6694 · arxiv_version: 1312.6694v2 · doi: 10.48550/arxiv.1312.6694 · pith_short_12: PFK3HCKN4GO3 · pith_short_16: PFK3HCKN4GO3SFBG · pith_short_8: PFK3HCKN

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/PFK3HCKN4GO3SFBGGN5RQY6L4O \
  | 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: 7955b3894de19db91426337b1863cbe3a86b24f41d3b38cd564b5a8ba04e68a8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "783a8d7c0e0bab8406ba53e28cd25c7d4665bbe1b8aa10d9d84f56a1cdb21202",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-12-23T21:02:21Z",
    "title_canon_sha256": "a9c31e75ac654fef3c1f456f01b870f27b44a8323fe4868413b0e7d230a6fdfa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1312.6694",
    "kind": "arxiv",
    "version": 2
  }
}