Pith Number

pith:E4WME4TL

pith:2013:E4WME4TL2CRQI33XBPGE4GFWCW

not attested not anchored not stored refs pending

Redshift drift in varying speed of light cosmology

Adam Balcerzak, Mariusz P. Dabrowski

arxiv:1310.7231 v2 · 2013-10-27 · astro-ph.CO · gr-qc

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{E4WME4TL2CRQI33XBPGE4GFWCW}

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	2026-05-18T01:16:26.874731Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

272cc2726bd0a3046f770bcc4e18b615b16e03605194a6a47629b0589284a7f4

Aliases

arxiv: 1310.7231 · arxiv_version: 1310.7231v2 · doi: 10.48550/arxiv.1310.7231 · pith_short_12: E4WME4TL2CRQ · pith_short_16: E4WME4TL2CRQI33X · pith_short_8: E4WME4TL

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/E4WME4TL2CRQI33XBPGE4GFWCW \
  | 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: 272cc2726bd0a3046f770bcc4e18b615b16e03605194a6a47629b0589284a7f4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "da149a3ba9bc8044da598316940d57a9e5acfa559ac427389b3e0de118024695",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-10-27T18:59:21Z",
    "title_canon_sha256": "de51aa67a6b150e778011f9ab5f936c3f1426313c9e11a516425ba3dcc4ff2c4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.7231",
    "kind": "arxiv",
    "version": 2
  }
}