Pith Number

pith:7DIC2UAA

pith:2011:7DIC2UAA36TP7J2P73GRAMM7PP

not attested not anchored not stored refs pending

Circumstellar Material in Type Ia Supernovae via Sodium Absorption Features

Alexei V. Filippenko, Assaf Sternberg, Avishay Gal-Yam, Bryan E. Penprase, Carlos Allende Prieto, Daniel J. Beeler, David Yong, Douglas C. Leonard, Ferdinando Patat, Geoffrey W. Marcy, Guy S. Stringfellow, Ian B. Thompson, Inese Ivans, Jennifer L. Marshall, Josh D. Simon, Josh S. Bloom, Mark M. Phillips, Nidia Morrell, Robert M. Quimby, Ryan J. Foley

arxiv:1108.3664 v1 · 2011-08-18 · astro-ph.HE · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7DIC2UAA36TP7J2P73GRAMM7PP}

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	2026-05-18T04:15:15.445802Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f8d02d5000dfa6ffa74ffecd10319f7bcccc92b755f8d4b27a8f4c271e95d433

Aliases

arxiv: 1108.3664 · arxiv_version: 1108.3664v1 · doi: 10.48550/arxiv.1108.3664 · pith_short_12: 7DIC2UAA36TP · pith_short_16: 7DIC2UAA36TP7J2P · pith_short_8: 7DIC2UAA

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/7DIC2UAA36TP7J2P73GRAMM7PP \
  | 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: f8d02d5000dfa6ffa74ffecd10319f7bcccc92b755f8d4b27a8f4c271e95d433

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2f073b38bae61b406c49209f28ebd9d4b0e402375270d3cb4974d75af5bc0e64",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2011-08-18T07:27:31Z",
    "title_canon_sha256": "1254db1eecb405e179ad8b177deb459e5e9bed7a277429b4165b8f48178b3d0c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.3664",
    "kind": "arxiv",
    "version": 1
  }
}