Pith Number

pith:UAEPSTOJ

pith:2015:UAEPSTOJDSUOTDQU44ZD3M2ND7

not attested not anchored not stored refs pending

Superconductivity in Ca-doped graphene

A. Grigorenko, A. K. Geim, C. A. Howard, D. Kundys, F. Guinea, I.V. Grigorieva, J. Chapman, R. R. Nair, Y.Su

arxiv:1508.06931 v1 · 2015-08-27 · cond-mat.supr-con · cond-mat.mtrl-sci

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UAEPSTOJDSUOTDQU44ZD3M2ND7}

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	2026-05-18T01:17:52.555986Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a008f94dc91ca8e98e14e7323db34d1fef4059b955d73c0cf066a7e4c55ba449

Aliases

arxiv: 1508.06931 · arxiv_version: 1508.06931v1 · doi: 10.48550/arxiv.1508.06931 · pith_short_12: UAEPSTOJDSUO · pith_short_16: UAEPSTOJDSUOTDQU · pith_short_8: UAEPSTOJ

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/UAEPSTOJDSUOTDQU44ZD3M2ND7 \
  | 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: a008f94dc91ca8e98e14e7323db34d1fef4059b955d73c0cf066a7e4c55ba449

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b4966d2a5e62ed4429a95b61b754bbe998c3a155ded5d901a534a4dcce381b65",
    "cross_cats_sorted": [
      "cond-mat.mtrl-sci"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.supr-con",
    "submitted_at": "2015-08-27T16:39:40Z",
    "title_canon_sha256": "ae1136656765814352551c511921ee392f852054970d924ab93cbb4eaae6b2b0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.06931",
    "kind": "arxiv",
    "version": 1
  }
}