Pith Number

pith:UQ4T23MX

pith:2010:UQ4T23MXM3FGMWUREVPBLQCYBY

not attested not anchored not stored refs pending

The effective fine structure constant of freestanding graphene measured in graphite

Bruno Uchoa, Diego Casa, Eduardo Fradkin, James P. Reed, Peter Abbamonte, Young Il Joe, Yu Gan

arxiv:1011.1590 v1 · 2010-11-06 · 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{UQ4T23MXM3FGMWUREVPBLQCYBY}

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	2026-05-18T02:04:50.744241Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a4393d6d9766ca665a91255e15c0580e04921627e36097d15970575bb60a94ea

Aliases

arxiv: 1011.1590 · arxiv_version: 1011.1590v1 · doi: 10.48550/arxiv.1011.1590 · pith_short_12: UQ4T23MXM3FG · pith_short_16: UQ4T23MXM3FGMWUR · pith_short_8: UQ4T23MX

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/UQ4T23MXM3FGMWUREVPBLQCYBY \
  | 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: a4393d6d9766ca665a91255e15c0580e04921627e36097d15970575bb60a94ea

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "685726192bc25185e51034aafcbcdd7b68dd12147fcfe97db7cc3aef35b7a187",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.str-el",
    "submitted_at": "2010-11-06T21:33:49Z",
    "title_canon_sha256": "99866820790a42e489c0a6c342f9d758da453abc738f38f35745cf65c3986844"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1011.1590",
    "kind": "arxiv",
    "version": 1
  }
}