Pith Number

pith:OJZ5X7F3

pith:2017:OJZ5X7F3CP7E3IQ3CCB3YTSV2H

not attested not anchored not stored refs pending

The bumpy light curve of supernova iPTF13z

A. De Cia, A. Gal-Yam, A. Nyholm, C. Fremling, E. O. Ofek, F. J. Masci, F. Taddia, J. Sollerman, M. M. Kasliwal, P. E. Nugent, R. Roy, T. J. Moriya, Y. Cao

arxiv:1703.09679 v2 · 2017-03-28 · astro-ph.SR · astro-ph.CO · 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{OJZ5X7F3CP7E3IQ3CCB3YTSV2H}

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	2026-05-18T00:34:41.702436Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7273dbfcbb13fe4da21b1083bc4e55d1cf2fd76dc9e612d6724d423c50b991b7

Aliases

arxiv: 1703.09679 · arxiv_version: 1703.09679v2 · doi: 10.48550/arxiv.1703.09679 · pith_short_12: OJZ5X7F3CP7E · pith_short_16: OJZ5X7F3CP7E3IQ3 · pith_short_8: OJZ5X7F3

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/OJZ5X7F3CP7E3IQ3CCB3YTSV2H \
  | 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: 7273dbfcbb13fe4da21b1083bc4e55d1cf2fd76dc9e612d6724d423c50b991b7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c5c1dfdca6b28b6298fe5bf4a695edac9fcf56b4c05a6d08bd245ba23c39e120",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "astro-ph.GA",
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2017-03-28T17:28:23Z",
    "title_canon_sha256": "0af393caeced9275db6c84e0b1faf917c44456913b4d0f1c2d266aa1fd872b59"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.09679",
    "kind": "arxiv",
    "version": 2
  }
}