Pith Number

pith:VDR3HWLP

pith:2018:VDR3HWLPASP7F5WBNO7QNIF4CP

not attested not anchored not stored refs pending

Long-term optical, UV, and X-ray continuum variations in the changing-look AGN HE 1136-2304

D. Chelouche, D. Grupe, M. Haas, M. Ramolla, M. W. Ochmann, M. Zetzl, N. Schartel, S. Kaspi, W. Kollatschny

arxiv:1804.05911 v1 · 2018-04-16 · 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{VDR3HWLPASP7F5WBNO7QNIF4CP}

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	2026-05-18T00:03:06.235848Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a8e3b3d96f049ff2f6c16bbf06a0bc13f87adcca97cd40e55949ac61c40e87fc

Aliases

arxiv: 1804.05911 · arxiv_version: 1804.05911v1 · doi: 10.48550/arxiv.1804.05911 · pith_short_12: VDR3HWLPASP7 · pith_short_16: VDR3HWLPASP7F5WB · pith_short_8: VDR3HWLP

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/VDR3HWLPASP7F5WBNO7QNIF4CP \
  | 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: a8e3b3d96f049ff2f6c16bbf06a0bc13f87adcca97cd40e55949ac61c40e87fc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "905ab374a787ec0538b792d2cf34653bf7455b822f42a41588271c16287b2240",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-04-16T19:47:58Z",
    "title_canon_sha256": "b266e0239c7a1faade6ce43a5f8149c78b79d1369d2996748d3fedcfa291f8aa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.05911",
    "kind": "arxiv",
    "version": 1
  }
}