Pith Number

pith:2U3MMQDC

pith:2007:2U3MMQDCQRUQM7LHEJDID7Y4TC

not attested not anchored not stored refs pending

Experimental evidence for a two-gap structure of superconducting NbSe_2: a specific heat study in external magnetic fields

C. C. Chou, C. L. Huang, C. P. Sun, H. Berger, H. D. Yang, H. Y. Shen, J.-Y. Lin, T. K. Lee, Y. T. Chang

arxiv:0712.2939 v1 · 2007-12-18 · 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{2U3MMQDCQRUQM7LHEJDID7Y4TC}

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	2026-07-04T17:07:17.534690Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d536c640628469067d67224681ff1c98aa725223060cac7376073f5d1afc593b

Aliases

arxiv: 0712.2939 · arxiv_version: 0712.2939v1 · doi: 10.48550/arxiv.0712.2939 · pith_short_12: 2U3MMQDCQRUQ · pith_short_16: 2U3MMQDCQRUQM7LH · pith_short_8: 2U3MMQDC

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/2U3MMQDCQRUQM7LHEJDID7Y4TC \
  | 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: d536c640628469067d67224681ff1c98aa725223060cac7376073f5d1afc593b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "be8e80e693fe5ab02e63ad743e70682d437c7dd79655cbd40eeadf71692bb07f",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "cond-mat.supr-con",
    "submitted_at": "2007-12-18T12:18:32Z",
    "title_canon_sha256": "65630d271949a6ad8f8df1e4f5d4f095a2a3132163ae2c3a33b189bbacbf2bf9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0712.2939",
    "kind": "arxiv",
    "version": 1
  }
}