Pith Number

pith:FE5W3AKW

pith:2014:FE5W3AKW4RONL7SSKDHNK3IWUJ

not attested not anchored not stored refs pending

What could the value of the cosmological constant tell us about the future variation of the fine structure constant?

Antonio Enea Romano

arxiv:1403.2044 v1 · 2014-03-09 · 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{FE5W3AKW4RONL7SSKDHNK3IWUJ}

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	2026-05-18T02:56:50.985686Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

293b6d8156e45cd5fe5250ced56d16a24df17f7056acbdd5e03f471ada556638

Aliases

arxiv: 1403.2044 · arxiv_version: 1403.2044v1 · doi: 10.48550/arxiv.1403.2044 · pith_short_12: FE5W3AKW4RON · pith_short_16: FE5W3AKW4RONL7SS · pith_short_8: FE5W3AKW

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/FE5W3AKW4RONL7SSKDHNK3IWUJ \
  | 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: 293b6d8156e45cd5fe5250ced56d16a24df17f7056acbdd5e03f471ada556638

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b31569d5ebc289725a9edb08550de58f2ce5b5042e19df7259222fd90798b520",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2014-03-09T10:08:52Z",
    "title_canon_sha256": "e22f94b32c6f0f78a83a5871b4a228f1518d96d0a38dee0c5b7aa0fce86f6966"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.2044",
    "kind": "arxiv",
    "version": 1
  }
}