Pith Number

pith:RU4P4KFN

pith:1999:RU4P4KFNQG7HAZA7ZMCOOY5EPX

not attested not anchored not stored refs pending

Specific-heat evidence for strong electron correlations in the thermoelectric material (Na,Ca)Co_{2}O_{4}

I. Terasaki (Waseda Univ.), Kouji Segawa (CRIEPI), N. Miyamoto, T. Kawata, Yoichi Ando

arxiv:cond-mat/9907008 v1 · 1999-07-01 · 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{RU4P4KFNQG7HAZA7ZMCOOY5EPX}

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	2026-07-04T16:12:52.826197Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8d38fe28ad81be70641fcb04e763a47df10ff6236e194c1be453f1e07c55a3e6

Aliases

arxiv: cond-mat/9907008 · arxiv_version: cond-mat/9907008v1 · doi: 10.48550/arxiv.cond-mat/9907008 · pith_short_12: RU4P4KFNQG7H · pith_short_16: RU4P4KFNQG7HAZA7 · pith_short_8: RU4P4KFN

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/RU4P4KFNQG7HAZA7ZMCOOY5EPX \
  | 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: 8d38fe28ad81be70641fcb04e763a47df10ff6236e194c1be453f1e07c55a3e6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1f1f3e70a80fec33a9827e8e6f8b71b3b6638bd9edcce0c8a542e36730429e17",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "cond-mat.str-el",
    "submitted_at": "1999-07-01T11:59:07Z",
    "title_canon_sha256": "327eab5d33c755afdf006a1c28c6a5567f3708213c1585578fde7686bc2176c8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "cond-mat/9907008",
    "kind": "arxiv",
    "version": 1
  }
}