Pith Number

pith:EV73ZR3B

pith:2014:EV73ZR3BFTLOWFHF7FZYQQ2EVZ

not attested not anchored not stored refs pending

Time-Varying Potassium in High-Resolution Spectra of the Type Ia Supernova 2014J

A.V. Filippenko, B.J. Fulton, D.A. Howell, E.J. Rivera, G.W. Marcy, J. Burt, K.J. Shen, L.M. Weiss, M.L. Graham, P.L. Kelly, S. Valenti, W. Zheng

arxiv:1412.0653 v1 · 2014-11-30 · astro-ph.SR · 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{EV73ZR3BFTLOWFHF7FZYQQ2EVZ}

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	2026-05-18T01:41:24.511163Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

257fbcc7612cd6eb14e5f973884344ae5e1909403abea4150629e8428554fd87

Aliases

arxiv: 1412.0653 · arxiv_version: 1412.0653v1 · doi: 10.48550/arxiv.1412.0653 · pith_short_12: EV73ZR3BFTLO · pith_short_16: EV73ZR3BFTLOWFHF · pith_short_8: EV73ZR3B

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/EV73ZR3BFTLOWFHF7FZYQQ2EVZ \
  | 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: 257fbcc7612cd6eb14e5f973884344ae5e1909403abea4150629e8428554fd87

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8409a3bb0e1513863ced30848a282f474118167bee07412ffc61899493206abc",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2014-11-30T22:57:08Z",
    "title_canon_sha256": "0120bd97f6c94c768c22c03c51dbbd997b14d68beba953d855bc98611da71698"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1412.0653",
    "kind": "arxiv",
    "version": 1
  }
}