Pith Number

pith:N3Y5UHHS

pith:2009:N3Y5UHHS2UPOG3BMRBKSWZTMEP

not attested not anchored not stored refs pending

Specific-Heat Measurement of Residual Superconductivity in the Normal State of Underdoped Cuprate Superconductors

Cong Ren, Gang Mu, Hai-Hu Wen, Huan Yang, Huiqian Luo, Jing Yan, Lei Fang, Lei Shan, Peng Cheng

arxiv:0907.0647 v1 · 2009-07-03 · cond-mat.supr-con · 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{N3Y5UHHS2UPOG3BMRBKSWZTMEP}

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	2026-05-18T02:13:05.451099Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6ef1da1cf2d51ee36c2c88552b666c23f68d173c546729c5ae86bdb9bb6a5261

Aliases

arxiv: 0907.0647 · arxiv_version: 0907.0647v1 · doi: 10.48550/arxiv.0907.0647 · pith_short_12: N3Y5UHHS2UPO · pith_short_16: N3Y5UHHS2UPOG3BM · pith_short_8: N3Y5UHHS

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/N3Y5UHHS2UPOG3BMRBKSWZTMEP \
  | 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: 6ef1da1cf2d51ee36c2c88552b666c23f68d173c546729c5ae86bdb9bb6a5261

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b464b7d82703271e333003128fa4c5e82852c5b51caacc51f4fb7680ea9f1c89",
    "cross_cats_sorted": [
      "cond-mat.str-el"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.supr-con",
    "submitted_at": "2009-07-03T14:38:09Z",
    "title_canon_sha256": "c8ebdedc52736645b5867bf42a11b966681dc254d179c8fd1127d4e763f9f126"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.0647",
    "kind": "arxiv",
    "version": 1
  }
}