Pith Number

pith:3N2MSAQZ

pith:2013:3N2MSAQZOGYM3N6JS6GY42TZZT

not attested not anchored not stored refs pending

Multi-Epoch High-Spectral-Resolution Observations of Neutral Sodium in 14 Type Ia Supernovae

A. Gal Yam, A. L. Kraus, A. M. Soderberg, A. Sternberg, D. Yong, E. Y. Hsiao, F. Patat, G. J. Herczeg, I. Thompson, J. D. Simon, J. G. Cohen, K. Nomoto, L. Chomiuk, M. M. Phillips, N. Morrell, P. A. Mazzali, R. J. Foley, S. Raskutti, W. Hillebrandt

arxiv:1311.3645 v1 · 2013-11-14 · 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{3N2MSAQZOGYM3N6JS6GY42TZZT}

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	2026-05-18T01:46:30.841533Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

db74c9021971b0cdb7c9978d8e6a79cccfd11f19e94c890220c97e489b0ef687

Aliases

arxiv: 1311.3645 · arxiv_version: 1311.3645v1 · doi: 10.48550/arxiv.1311.3645 · pith_short_12: 3N2MSAQZOGYM · pith_short_16: 3N2MSAQZOGYM3N6J · pith_short_8: 3N2MSAQZ

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/3N2MSAQZOGYM3N6JS6GY42TZZT \
  | 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: db74c9021971b0cdb7c9978d8e6a79cccfd11f19e94c890220c97e489b0ef687

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5645c8c7e0295c3b6ff98f2e5cc9d7f3d881dd83411c29037b97ca8b4ff2201b",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2013-11-14T20:15:37Z",
    "title_canon_sha256": "d5298c293e353e59e9503429fbb9b7ad939e1579da53cfb7438e6b7fffc14bb0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.3645",
    "kind": "arxiv",
    "version": 1
  }
}