Pith Number

pith:PLZDGIPR

pith:2020:PLZDGIPRWRQZ27SEIAZYGRNN7N

not attested not anchored not stored refs pending

A new and unusual LBV-like outburst from a Wolf-Rayet star in the outskirts of M33

Alexei V. Filippenko, Carles Badenes, Charles D. Kilpatrick, Christopher Bilinski, Jeffrey M. Silverman, Jennifer E. Andrews, Mansi Kasliwal, Maxwell Moe, Nathan Smith, Peter Milne, Wen-fai Fong

arxiv:2001.02725 v1 · 2020-01-08 · astro-ph.SR · astro-ph.GA · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PLZDGIPRWRQZ27SEIAZYGRNN7N}

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	2026-07-05T00:34:51.700845Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7af23321f1b4619d7e4440338345adfb483a074efa662b6ecd247f8503e0c36f

Aliases

arxiv: 2001.02725 · arxiv_version: 2001.02725v1 · doi: 10.48550/arxiv.2001.02725 · pith_short_12: PLZDGIPRWRQZ · pith_short_16: PLZDGIPRWRQZ27SE · pith_short_8: PLZDGIPR

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/PLZDGIPRWRQZ27SEIAZYGRNN7N \
  | 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: 7af23321f1b4619d7e4440338345adfb483a074efa662b6ecd247f8503e0c36f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ae1f5564807d36da19a5aa5516d1d82707eeef607851215ee3970f0f0194d8bc",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2020-01-08T20:27:53Z",
    "title_canon_sha256": "78e426d69fb64722d4b1702e9661dc91b989db0d18260ffea6b9a51427383326"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2001.02725",
    "kind": "arxiv",
    "version": 1
  }
}