Pith Number

pith:Y46P7MBH

pith:2015:Y46P7MBHL3RGSLDV2YHCK4EJLQ

not attested not anchored not stored refs pending

Constraining the Progenitor Companion of the Nearby Type Ia SN 2011fe with a Nebular Spectrum at +981 Days

Alexei V. Filippenko, Jeffrey M. Silverman, Kelsey I. Clubb, Mark Sullivan, Melissa L. Graham, Peter E. Nugent, S. Bradley Cenko, Weikang Zheng

arxiv:1502.00646 v2 · 2015-01-25 · 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{Y46P7MBHL3RGSLDV2YHCK4EJLQ}

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	2026-05-18T01:27:07.918747Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c73cffb0275ee2692c75d60e2570895c3237528de0e2cfddf26c38881eccbadd

Aliases

arxiv: 1502.00646 · arxiv_version: 1502.00646v2 · doi: 10.48550/arxiv.1502.00646 · pith_short_12: Y46P7MBHL3RG · pith_short_16: Y46P7MBHL3RGSLDV · pith_short_8: Y46P7MBH

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/Y46P7MBHL3RGSLDV2YHCK4EJLQ \
  | 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: c73cffb0275ee2692c75d60e2570895c3237528de0e2cfddf26c38881eccbadd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c31be7f4818d0e1025e8b6a03fa7ae3a13dea8cdcea7298bc99e4b72f49ef6f2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2015-01-25T23:53:51Z",
    "title_canon_sha256": "2a8a8cf3dea11b17afdc088816271d56a066d53c8a28cffe5f51bb681de6819d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.00646",
    "kind": "arxiv",
    "version": 2
  }
}