Pith Number

pith:3GH7435Z

pith:2015:3GH7435Z4WLGDLB2J5TVK3FSSJ

not attested not anchored not stored refs pending

High-Velocity Features of Calcium and Silicon in the Spectra of Type Ia Supernovae

Alexei V. Filippenko, Barnabas Barna, Brian W. Mulligan, G. H. Marion, J. Craig Wheeler, Jeffrey M. Silverman, Jozsef Vinko, Tamas Szalai

arxiv:1502.07278 v2 · 2015-02-17 · 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{3GH7435Z4WLGDLB2J5TVK3FSSJ}

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	2026-05-18T02:17:35.717568Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d98ffe6fb9e59661ac3a4f67556cb29269ae9e8e1efdd9c13e071c5fe8041cdc

Aliases

arxiv: 1502.07278 · arxiv_version: 1502.07278v2 · doi: 10.48550/arxiv.1502.07278 · pith_short_12: 3GH7435Z4WLG · pith_short_16: 3GH7435Z4WLGDLB2 · pith_short_8: 3GH7435Z

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/3GH7435Z4WLGDLB2J5TVK3FSSJ \
  | 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: d98ffe6fb9e59661ac3a4f67556cb29269ae9e8e1efdd9c13e071c5fe8041cdc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "31af788e5a14b2381e240ce9b37949a24f215814a55dd3781c48bd9ca15897ac",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2015-02-17T21:00:11Z",
    "title_canon_sha256": "e73918675d60fae97530c823cf88bf0e49d3a3cb236551d9082c0a81754a7cd9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.07278",
    "kind": "arxiv",
    "version": 2
  }
}