Pith Number

pith:O5YOWA7F

pith:2022:O5YOWA7F5ZDU34I4JLAOIOFHZ4

not attested not anchored not stored refs pending

Fundamental Physics with ESPRESSO, Constraining a simple parametrisation for varying $\alpha$

Alejandro Su\'arez Mascare\~no, Alessandro Sozzetti, Alexandre Cabral, Ana C. O. Leite, Carlos J. A. P. Martins, Catarina M. J. Marques, Dinko Milakovi\'c, Enric Palle, Francesco A. Pepe, Guido Cupani, Jonay I. Gonz\'alez Hern\'andez, Manuel Abreu, Maria-Rosa Zapatero Osorio, Michael T. Murphy, Nelson J. Nunes, Nuno C. Santos, Paolo Di Marcantonio, Paolo Molaro, Rafael Rebolo, Ricardo G\'enova Santos, S\'ergio G. Sousa, Stefano Cristiani, Tiago Barreiro, Tobias M. Schmidt, Valentina D'Odorico, Vardan Adibekyan, Vitor da Fonseca

arxiv:2204.02930 v2 · 2022-04-06 · 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{O5YOWA7F5ZDU34I4JLAOIOFHZ4}

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	2026-07-05T05:15:38.542601Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7770eb03e5ee474df11c4ac0e438a7cf2b019ec2e5c02fe2586b345f503a54e3

Aliases

arxiv: 2204.02930 · arxiv_version: 2204.02930v2 · doi: 10.48550/arxiv.2204.02930 · pith_short_12: O5YOWA7F5ZDU · pith_short_16: O5YOWA7F5ZDU34I4 · pith_short_8: O5YOWA7F

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/O5YOWA7F5ZDU34I4JLAOIOFHZ4 \
  | 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: 7770eb03e5ee474df11c4ac0e438a7cf2b019ec2e5c02fe2586b345f503a54e3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c3f09f062f6ced124805ac4a31358a1c287d8fe400a6353eab44b76c2878a411",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2022-04-06T16:42:12Z",
    "title_canon_sha256": "a4c08c873c736f8ea43f8a42493c3785711b0cd38252f51a7bf483189494c7b1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2204.02930",
    "kind": "arxiv",
    "version": 2
  }
}