Pith Number

pith:OJLQN7MM

pith:2019:OJLQN7MMF2P2R3WYLYDBR733H7

not attested not anchored not stored refs pending

Fundamental physics constraints from testing the stability of the fine-structure constant with the ELTs

A. C. O. Leite, C. J. A. P. Martins, C. S. Alves, P. Molaro, T. A. Silva

arxiv:1902.02785 v1 · 2019-02-07 · astro-ph.CO · hep-ph · physics.ins-det

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OJLQN7MMF2P2R3WYLYDBR733H7}

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	2026-05-17T23:52:58.293901Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

725706fd8c2e9fa8eed85e0618ff7b3fc56de171e2fdb13844ccfaba4086d6b5

Aliases

arxiv: 1902.02785 · arxiv_version: 1902.02785v1 · doi: 10.48550/arxiv.1902.02785 · pith_short_12: OJLQN7MMF2P2 · pith_short_16: OJLQN7MMF2P2R3WY · pith_short_8: OJLQN7MM

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/OJLQN7MMF2P2R3WYLYDBR733H7 \
  | 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: 725706fd8c2e9fa8eed85e0618ff7b3fc56de171e2fdb13844ccfaba4086d6b5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e45d06fe98fda8034c47ce41e128a6bd89d091e9a3d3b21325799a046a9dea84",
    "cross_cats_sorted": [
      "hep-ph",
      "physics.ins-det"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2019-02-07T16:28:25Z",
    "title_canon_sha256": "e0d151c0b47ea664d243c56f446b8801cbad16228f8cf83601a3214ad3c62994"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.02785",
    "kind": "arxiv",
    "version": 1
  }
}