Pith Number

pith:CALXSNUP

pith:2015:CALXSNUPCGYML6VIZNXBSZR727

not attested not anchored not stored refs pending

A reexamination of the effective fine structure constant of graphene, as measured in graphite

Anshul Kogar, Bruno Uchoa, Diego Casa, Eduardo Fradkin, Gilberto de la Pena Munoz, Peter Abbamonte, Thomas Gog, Yu Gan

arxiv:1501.06812 v3 · 2015-01-27 · cond-mat.str-el

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CALXSNUPCGYML6VIZNXBSZR727}

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	2026-05-18T01:13:16.880057Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

101779368f11b0c5faa8cb6e19663fd7f09065034e62ccfc87dc340c0ec07d77

Aliases

arxiv: 1501.06812 · arxiv_version: 1501.06812v3 · doi: 10.48550/arxiv.1501.06812 · pith_short_12: CALXSNUPCGYM · pith_short_16: CALXSNUPCGYML6VI · pith_short_8: CALXSNUP

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/CALXSNUPCGYML6VIZNXBSZR727 \
  | 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: 101779368f11b0c5faa8cb6e19663fd7f09065034e62ccfc87dc340c0ec07d77

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e8819e8236afe54823133022f329f5ddb6ef7b438e6c4056e4e5de1f6693f81c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.str-el",
    "submitted_at": "2015-01-27T16:38:52Z",
    "title_canon_sha256": "1f9b992b07c2b85c89318bb1142026e0130ea60ba87c3c7809c9bd6374e9da03"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.06812",
    "kind": "arxiv",
    "version": 3
  }
}