Pith Number

pith:OU7HGVNW

pith:2012:OU7HGVNWZJQFL3HGEDCRL77H2I

not attested not anchored not stored refs pending

Reply to Comment by Calandra et al on "Electronic Structure of Superconducting KC$_8$ and Nonsuperconducting LiC$_6$ Graphite Intercalation Compounds: Evidence for a Graphene-Sheet-Driven Superconducting State"

A. V. Fedorov, C. A. Howard, M. Ellerby, T. Valla, Z.-H. Pan

arxiv:1204.1898 v1 · 2012-04-09 · cond-mat.supr-con

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OU7HGVNWZJQFL3HGEDCRL77H2I}

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	2026-05-18T03:58:14.809240Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

753e7355b6ca6055ece620c515ffe7d2216bbb7e8d81fd906b5423404a059326

Aliases

arxiv: 1204.1898 · arxiv_version: 1204.1898v1 · doi: 10.48550/arxiv.1204.1898 · pith_short_12: OU7HGVNWZJQF · pith_short_16: OU7HGVNWZJQFL3HG · pith_short_8: OU7HGVNW

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/OU7HGVNWZJQFL3HGEDCRL77H2I \
  | 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: 753e7355b6ca6055ece620c515ffe7d2216bbb7e8d81fd906b5423404a059326

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fab66812b19ed6a1c58a7f611080a6d703667ca272c9fab2abb1df76424b7b85",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.supr-con",
    "submitted_at": "2012-04-09T15:21:44Z",
    "title_canon_sha256": "a56b7c70e023d94455d055c8d136320aa43913c85e2f93f35d45f0633d38e695"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.1898",
    "kind": "arxiv",
    "version": 1
  }
}