Pith Number

pith:NYU5344A

pith:2014:NYU5344AQNYQUALPZAJJECK5M5

not attested not anchored not stored refs pending

The variation of the fine structure constant: testing the dipole model with thermonuclear supernovae

Carolina Negrelli, Enrique Garc\'ia-Berro, Lucila Kraiselburd, Susana J. Landau

arxiv:1412.3418 v2 · 2014-12-10 · 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{NYU5344AQNYQUALPZAJJECK5M5}

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	2026-05-18T02:18:13.425304Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6e29ddf38083710a016fc81292095d6768f23bb23b872835c3f5d0a694492084

Aliases

arxiv: 1412.3418 · arxiv_version: 1412.3418v2 · doi: 10.48550/arxiv.1412.3418 · pith_short_12: NYU5344AQNYQ · pith_short_16: NYU5344AQNYQUALP · pith_short_8: NYU5344A

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/NYU5344AQNYQUALPZAJJECK5M5 \
  | 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: 6e29ddf38083710a016fc81292095d6768f23bb23b872835c3f5d0a694492084

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7214c5b2d4d73c5704a4829aef55992688a2899af9211658ef7e3f5b178e26ab",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2014-12-10T19:19:29Z",
    "title_canon_sha256": "42c247e08b3fc77b0c4c3c27d2542599e3a7ea67b14629333221b4e53546dca9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1412.3418",
    "kind": "arxiv",
    "version": 2
  }
}