Pith Number

pith:6NJ2WY7N

pith:2011:6NJ2WY7NICLAA6VGEATYNMUQXD

not attested not anchored not stored refs pending

The Unusual Superconducting State at 49 K in Electron-Doped CaFe2As2 at Ambient

((1) TCSUH, 2, 2), (2) Department of Physics, 3), (3) Department of Chemistry, 4), (4) Lawrence Berkeley National Laboratory), B. Lorenz (1, B. Lv (1), C. W. Chu (1, F. Y. Wei (1, J. Meen (1, L. Z. Deng (1, M. Gooch (1), University of Houston, Y. Y. Sun (1), Y. Y. Xue (1

arxiv:1106.2157 v2 · 2011-06-10 · 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{6NJ2WY7NICLAA6VGEATYNMUQXD}

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	2026-05-18T04:10:10.382445Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f353ab63ed4096007aa6202786b290b8d29602cc8754b131a9b5d77804e8cd8f

Aliases

arxiv: 1106.2157 · arxiv_version: 1106.2157v2 · doi: 10.48550/arxiv.1106.2157 · pith_short_12: 6NJ2WY7NICLA · pith_short_16: 6NJ2WY7NICLAA6VG · pith_short_8: 6NJ2WY7N

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/6NJ2WY7NICLAA6VGEATYNMUQXD \
  | 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: f353ab63ed4096007aa6202786b290b8d29602cc8754b131a9b5d77804e8cd8f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6715eab016309808743a28434500a7b52922cf5d5cf32b1fe6914b17cb0f7eee",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.supr-con",
    "submitted_at": "2011-06-10T19:52:36Z",
    "title_canon_sha256": "dde9e2ac0ed9a30e900fe73dde977db3c98f41006e5a3120a8fb209bf7d6b23e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1106.2157",
    "kind": "arxiv",
    "version": 2
  }
}