Pith Number

pith:4JMPP6LV

pith:2018:4JMPP6LVFFAFXEQMQLAE6ME3FF

not attested not anchored not stored refs pending

A High-Quality velocity-delay map of the broad-line region in NGC 5548

Chen Hu, Jian-Min Wang, Jin Ming Bai, Kai Wang, Kai-Xing Lu, Luis C. Ho, Ming Xiao, Pu Du, Weihao Bian, Yan-Rong Li, Ye-Fei Yuan, Ying-Ke Huang, Zhi-Xiang Zhang

arxiv:1809.05688 v2 · 2018-09-15 · 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{4JMPP6LVFFAFXEQMQLAE6ME3FF}

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	2026-05-18T00:04:54.531234Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e258f7f97529405b920c82c04f309b2962aaede2363ba6e23d9f34b2e8074382

Aliases

arxiv: 1809.05688 · arxiv_version: 1809.05688v2 · doi: 10.48550/arxiv.1809.05688 · pith_short_12: 4JMPP6LVFFAF · pith_short_16: 4JMPP6LVFFAFXEQM · pith_short_8: 4JMPP6LV

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/4JMPP6LVFFAFXEQMQLAE6ME3FF \
  | 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: e258f7f97529405b920c82c04f309b2962aaede2363ba6e23d9f34b2e8074382

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "12f47e0876072f84b7fbe69dfa374290af019ce41a328b08a86f2ca6e7c1c8ba",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-09-15T10:00:28Z",
    "title_canon_sha256": "0817c8cf2a1d743a83f36c6b51d9a45e9de091e61cd328a7a8bfff99d00d6ade"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.05688",
    "kind": "arxiv",
    "version": 2
  }
}