Pith Number

pith:4YEGODXT

pith:2012:4YEGODXTFFXXC5KBVV7OLSOZDG

not attested not anchored not stored refs pending

Superconductivity at 44 K in K intercalated FeSe system with excess Fe

A. M. Zhang, K. Liu, Q. M. Zhang, T. L. Xia, W. Tong, Z. R. Yang

arxiv:1203.1533 v2 · 2012-03-07 · cond-mat.supr-con · cond-mat.mtrl-sci · 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{4YEGODXTFFXXC5KBVV7OLSOZDG}

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	2026-05-18T03:34:16.346925Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e608670ef3296f717541ad7ee5c9d919aff768a604927b4a9422838f36d650ee

Aliases

arxiv: 1203.1533 · arxiv_version: 1203.1533v2 · doi: 10.48550/arxiv.1203.1533 · pith_short_12: 4YEGODXTFFXX · pith_short_16: 4YEGODXTFFXXC5KB · pith_short_8: 4YEGODXT

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/4YEGODXTFFXXC5KBVV7OLSOZDG \
  | 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: e608670ef3296f717541ad7ee5c9d919aff768a604927b4a9422838f36d650ee

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e794ee5a06178082911ebdf2b32b63fea9af3e0e0edebf39da2e79867fe82f0a",
    "cross_cats_sorted": [
      "cond-mat.mtrl-sci",
      "cond-mat.str-el"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.supr-con",
    "submitted_at": "2012-03-07T16:40:20Z",
    "title_canon_sha256": "3c060a1d41f6057632a23b9f9545edc635e675eee8e1e806ae2dd97015dbb0f4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.1533",
    "kind": "arxiv",
    "version": 2
  }
}