Pith Number

pith:BPT7IDFA

pith:1999:BPT7IDFAUF2ZSVSYYXTE7SVIDA

not attested not anchored not stored refs pending

Two-gap model for underdoped cuprate superconductors

A. A. Varlamov, A. Perali, C. Castellani, C. Di Castro, E. Piegari, M. Grilli

arxiv:cond-mat/9912363 v2 · 1999-12-20 · 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{BPT7IDFAUF2ZSVSYYXTE7SVIDA}

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	2026-07-04T16:13:46.379835Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0be7f40ca0a175995658c5e64fcaa8180c8b7baa131104e23235c5dd21de2c9b

Aliases

arxiv: cond-mat/9912363 · arxiv_version: cond-mat/9912363v2 · doi: 10.48550/arxiv.cond-mat/9912363 · pith_short_12: BPT7IDFAUF2Z · pith_short_16: BPT7IDFAUF2ZSVSY · pith_short_8: BPT7IDFA

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/BPT7IDFAUF2ZSVSYYXTE7SVIDA \
  | 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: 0be7f40ca0a175995658c5e64fcaa8180c8b7baa131104e23235c5dd21de2c9b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "125ce47177e9aa93477209a385c8904d50e6067d62c6c12cf90ad45f364fa3fa",
    "cross_cats_sorted": [
      "cond-mat.str-el"
    ],
    "license": "",
    "primary_cat": "cond-mat.supr-con",
    "submitted_at": "1999-12-20T15:02:23Z",
    "title_canon_sha256": "1dc348f3172616f157cea158328424fc5c26b081ad45546eed0bc52d4296e1d3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "cond-mat/9912363",
    "kind": "arxiv",
    "version": 2
  }
}