Pith Number

pith:ACQDRRHZ

pith:2019:ACQDRRHZJJQR3B6FLIM5OLMJHI

not attested not anchored not stored refs pending

Gapless spin excitations in superconducting La$_{2-x}$Ca$_{1+x}$Cu$_{2}$O$_{6}$ with $T_c$ up to 55 K

G. D. Gu, Guangyong Xu, I. A. Zaliznyak, J. M. Tranquada, John A. Schneeloch, M. B. Stone, Ruidan Zhong

arxiv:1902.07799 v2 · 2019-02-20 · 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{ACQDRRHZJJQR3B6FLIM5OLMJHI}

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	2026-05-17T23:45:20.193961Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

00a038c4f94a611d87c55a19d72d893a00530d1acde00b71a7d0730723b3d437

Aliases

arxiv: 1902.07799 · arxiv_version: 1902.07799v2 · doi: 10.48550/arxiv.1902.07799 · pith_short_12: ACQDRRHZJJQR · pith_short_16: ACQDRRHZJJQR3B6F · pith_short_8: ACQDRRHZ

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/ACQDRRHZJJQR3B6FLIM5OLMJHI \
  | 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: 00a038c4f94a611d87c55a19d72d893a00530d1acde00b71a7d0730723b3d437

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "93819c7a8dd1da080feb3b1cf2338118730af307fbbd385f22b02f6bde35af93",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.supr-con",
    "submitted_at": "2019-02-20T22:24:43Z",
    "title_canon_sha256": "2aefacfa2379cf21730c42772389b2bf12e188e3fb5a48b78244d21b0e75562b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.07799",
    "kind": "arxiv",
    "version": 2
  }
}