Pith Number

pith:D4VGAWBG

pith:2018:D4VGAWBGZXABITW6JFYL6ODKXR

not attested not anchored not stored refs pending

Calibration and Limitations of the Mg II line-based Black Hole Masses

Daeseong Park, Dawoo Park, Huynh Anh N. Le, Jong-Hak Woo, Marios Karouzos, Matthew A. Malkan, Tommaso Treu, Vardha N. Bennert

arxiv:1804.02798 v4 · 2018-04-09 · 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{D4VGAWBGZXABITW6JFYL6ODKXR}

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	2026-05-18T00:13:26.455840Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1f2a605826cdc0144ede4970bf386abc70d0220b008e6f04803509fed02446a6

Aliases

arxiv: 1804.02798 · arxiv_version: 1804.02798v4 · doi: 10.48550/arxiv.1804.02798 · pith_short_12: D4VGAWBGZXAB · pith_short_16: D4VGAWBGZXABITW6 · pith_short_8: D4VGAWBG

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/D4VGAWBGZXABITW6JFYL6ODKXR \
  | 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: 1f2a605826cdc0144ede4970bf386abc70d0220b008e6f04803509fed02446a6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "661764d07205fde5ed658c661894d2334c2319d44c12f70dc1ba688e7d493a55",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-04-09T02:43:17Z",
    "title_canon_sha256": "b2ef1230ad90045edb44f1207d4a058264a85eeef07d1e1e567528c8897a3566"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.02798",
    "kind": "arxiv",
    "version": 4
  }
}