Pith Number

pith:R4SVFLXE

pith:2013:R4SVFLXECBRHXNQ4VEVWA2W36L

not attested not anchored not stored refs pending

Late-Time Spectral Observations of the Strongly Interacting Type Ia Supernova PTF11kx

Alexei V. Filippenko, Avishay Gal-Yam, D. Andrew Howell, Isobel M. Hook, Jeffrey M. Silverman, Mark Sullivan, Peter E. Nugent, S. Bradley Cenko, Yen-Chen Pan

arxiv:1303.7234 v2 · 2013-03-28 · astro-ph.CO · 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{R4SVFLXECBRHXNQ4VEVWA2W36L}

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	2026-05-18T01:50:51.351375Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8f2552aee410627bb61ca92b606adbf2cad1e03fd7224df80c9ac470cae9b6de

Aliases

arxiv: 1303.7234 · arxiv_version: 1303.7234v2 · doi: 10.48550/arxiv.1303.7234 · pith_short_12: R4SVFLXECBRH · pith_short_16: R4SVFLXECBRHXNQ4 · pith_short_8: R4SVFLXE

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/R4SVFLXECBRHXNQ4VEVWA2W36L \
  | 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: 8f2552aee410627bb61ca92b606adbf2cad1e03fd7224df80c9ac470cae9b6de

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e75141744dd6e3d86e3132835b55aeceec65cc6f1fc7bc51261c4da891a60545",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-03-28T20:00:01Z",
    "title_canon_sha256": "b6567e03b187c35b249ba3f16cd79829e8bd34980e1ca9e561c0fa162b270abe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1303.7234",
    "kind": "arxiv",
    "version": 2
  }
}