Pith Number

pith:P5VTX7QR

pith:2018:P5VTX7QRKXJT65VBHSNJWFEC3Z

not attested not anchored not stored refs pending

Spectra of Hydrogen-Poor Superluminous Supernovae from the Palomar Transient Factory

Alexei V. Filippenko, Annalisa De Cia, Assaf Sternberg, Avishay Gal-Yam, Daniel A. Perley, Giorgos Leloudas, Io K. W. Kleiser, Jeff Cooke, Jeffrey M. Silverman, Joshua S. Bloom, Lin Yan, Mansi M. Kasliwal, Mark Sullivan, Ofer Yaron, Paul M. Vreeswijk, Peter E. Nugent, Ragnhild Lunnan, Richard Ellis, Robert M. Quimby, S. Bradley Cenko, Shrinivas R. Kulkarni, Thomas Matheson, Yen-Chen Pan

arxiv:1802.07820 v1 · 2018-02-21 · astro-ph.HE · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{P5VTX7QRKXJT65VBHSNJWFEC3Z}

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	2026-05-18T00:21:05.791362Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7f6b3bfe1155d33f76a13c9a9b1482de6572676cb37d8584ad5ffb41d52d3480

Aliases

arxiv: 1802.07820 · arxiv_version: 1802.07820v1 · doi: 10.48550/arxiv.1802.07820 · pith_short_12: P5VTX7QRKXJT · pith_short_16: P5VTX7QRKXJT65VB · pith_short_8: P5VTX7QR

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/P5VTX7QRKXJT65VBHSNJWFEC3Z \
  | 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: 7f6b3bfe1155d33f76a13c9a9b1482de6572676cb37d8584ad5ffb41d52d3480

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "efc5a0bd7c8634cd0443cecaa381023803d5aaaec2cda0e5baea1b7de0b996b5",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2018-02-21T21:43:39Z",
    "title_canon_sha256": "9326f9e9b963e8304cb96f3c121c2f7d4828e167011f711089452350a0554c78"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.07820",
    "kind": "arxiv",
    "version": 1
  }
}