Pith Number

pith:WDJ44M6H

pith:2018:WDJ44M6HE5ZW66EOHSQ7TNXJFO

not attested not anchored not stored refs pending

SN 2017ein and the Possible First Identification of a Type Ic Supernova Progenitor

Alexei V. Filippenko, Angela Adamo, Dan Milisavljevic, Jennifer E. Andrews, Keto Zhang, Michele Cignoni, Nathan Smith, Ori D. Fox, Patrick L. Kelly, Sahana Kumar, Sameen Yunus, Schuyler D. Van Dyk, Thomas G. Brink, Weikang Zheng

arxiv:1803.01050 v2 · 2018-03-02 · astro-ph.SR · 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{WDJ44M6HE5ZW66EOHSQ7TNXJFO}

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	2026-05-18T00:12:18.116445Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b0d3ce33c727736f788e3ca1f9b6e92b9ac9848518feca60f15df305596e91f6

Aliases

arxiv: 1803.01050 · arxiv_version: 1803.01050v2 · doi: 10.48550/arxiv.1803.01050 · pith_short_12: WDJ44M6HE5ZW · pith_short_16: WDJ44M6HE5ZW66EO · pith_short_8: WDJ44M6H

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/WDJ44M6HE5ZW66EOHSQ7TNXJFO \
  | 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: b0d3ce33c727736f788e3ca1f9b6e92b9ac9848518feca60f15df305596e91f6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "666999f4aca257e2d78203d92daa4059642f35e402e294686018ea1ef53e2f60",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-03-02T21:42:10Z",
    "title_canon_sha256": "4781da6191573652b8ca66d944d11a6be63ccb36ec1cdf4b635572dc6dca40c5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.01050",
    "kind": "arxiv",
    "version": 2
  }
}