Pith Number

pith:GM4BRBMM

pith:2013:GM4BRBMMNS7VSWUN2OY2CO4ATX

not attested not anchored not stored refs pending

On the Source of the Dust Extinction in Type Ia Supernovae and the Discovery of Anomalously Strong Na I Absorption

Abdo Campillay, A. Gal-Yam, Alicia M. Soderberg, Amanda I. Karakas, A. Sternberg, Barry F. Madore, B. E. Penprase, Carlos Contreras, Christopher R. Burns, Daniel Perley, D. C. Leonard, E. Y. Hsiao, F. Patat, Gast\'on Folatelli, G. Pignata G. Preston, Gregory A. Shields, I. B. Thompson, Inese I. Ivans, Joshua D. Simon, Laura Chomiuk, Mario Hamuy, Maximilian Stritzinger, Miguel Roth, M. M. Phillips, Nicholas B. Suntzeff, Nick L. J. Cox, Nidia Morrell, R. E. Williams, Ryan J. Foley, Sven E. Persson, Wendy L. Freedman

arxiv:1311.0147 v1 · 2013-11-01 · 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{GM4BRBMMNS7VSWUN2OY2CO4ATX}

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	2026-05-18T01:46:40.068826Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

333818858c6cbf595a8dd3b1a13b809ddf6b301f928b469ca518a0a7844d2e40

Aliases

arxiv: 1311.0147 · arxiv_version: 1311.0147v1 · doi: 10.48550/arxiv.1311.0147 · pith_short_12: GM4BRBMMNS7V · pith_short_16: GM4BRBMMNS7VSWUN · pith_short_8: GM4BRBMM

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/GM4BRBMMNS7VSWUN2OY2CO4ATX \
  | 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: 333818858c6cbf595a8dd3b1a13b809ddf6b301f928b469ca518a0a7844d2e40

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c3352f308f85eee6c380f5061fb1bfcf8aeefe1487461d5464482a5649dad7fe",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-11-01T11:40:03Z",
    "title_canon_sha256": "41dc4af678dcfd6c4d6aaf9d72080c5fb3037c4dad6efc11369ecb6515c94b57"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.0147",
    "kind": "arxiv",
    "version": 1
  }
}