Pith Number

pith:Z45RO4JL

pith:2021:Z45RO4JLADPWPWZNWA5VLOM2Z3

not attested not anchored not stored refs pending

SN 2013ai: a link between hydrogen-rich and hydrogen-poor core-collapse supernovae

A. Bunzel, A. Fisher, B. Englert, C. Ashall, C. Burns, C. Contreras, D. R. Young, E. Falco, E.Y. Hsiao, G. Folatelli, G. H. Marion, J. D. Lyman, J. Lu, J. Maund, J. P. Anderson, J. Ser\'on, K. Ertini, L. Galbany, L. Martinez, M. Bersten, M. Fraser, M. M. Phillips, M. Shahbandeh, M. Stritzinger, M. Sullivan, N. B. Suntzeff, N. Elias-Rosa, N. Morrell, P. Hoeflich, P.J. Pessi, R. P. Kirshner, S. Benetti, S. Davis, S. Kumar, S. Mattila, T. W. Chen

arxiv:2101.05424 v1 · 2021-01-14 · 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{Z45RO4JLADPWPWZNWA5VLOM2Z3}

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	2026-07-05T02:25:35.016207Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cf3b17712b00df67db2db03b55b99acef4396a2a1d034d748098e93b1dba7bdf

Aliases

arxiv: 2101.05424 · arxiv_version: 2101.05424v1 · doi: 10.48550/arxiv.2101.05424 · pith_short_12: Z45RO4JLADPW · pith_short_16: Z45RO4JLADPWPWZN · pith_short_8: Z45RO4JL

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/Z45RO4JLADPWPWZNWA5VLOM2Z3 \
  | 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: cf3b17712b00df67db2db03b55b99acef4396a2a1d034d748098e93b1dba7bdf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c7097f4f190090ac82b98481bbbadc5edb99ac9f460a40429532e2779c5b8981",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2021-01-14T02:21:15Z",
    "title_canon_sha256": "88b5ca2975da94152fed2cecaa0fd70f04faa33475d8ada2448ed9c894d69510"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2101.05424",
    "kind": "arxiv",
    "version": 1
  }
}