Pith Number

pith:POXK4YM3

pith:2014:POXK4YM3C42XVAHQKXUWPH3SWB

not attested not anchored not stored refs pending

Black Hole Mass Estimates and Rapid Growth of Supermassive Black Holes in Luminous $z \sim$ 3.5 Quasars

Fuyan Bian, Ran Wang, Richard Green, Wenwen Zuo, Xiaohui Fan, Xue-Bing Wu

arxiv:1412.2438 v1 · 2014-12-08 · astro-ph.HE · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{POXK4YM3C42XVAHQKXUWPH3SWB}

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	2026-05-18T01:41:20.982436Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7baeae619b17357a80f055e9679f72b0768e846c9f08469306e59873c630103f

Aliases

arxiv: 1412.2438 · arxiv_version: 1412.2438v1 · doi: 10.48550/arxiv.1412.2438 · pith_short_12: POXK4YM3C42X · pith_short_16: POXK4YM3C42XVAHQ · pith_short_8: POXK4YM3

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/POXK4YM3C42XVAHQKXUWPH3SWB \
  | 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: 7baeae619b17357a80f055e9679f72b0768e846c9f08469306e59873c630103f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "98d9df553b24267a812869916658930325e66d54e7b3566f75bba23e9f4c25ca",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2014-12-08T03:52:38Z",
    "title_canon_sha256": "69f89c66d5852c0ad02f81310662846edeb97066d63c4c12b4d19a44128f06ff"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1412.2438",
    "kind": "arxiv",
    "version": 1
  }
}