Pith Number

pith:MMNEQVC4

pith:2016:MMNEQVC4RH6CJ3EHOZNRO7HPH4

not attested not anchored not stored refs pending

Superconductivity in undoped CaFe2As2 single crystals

Bin-Bin Ruan, Bo-Jin Pan, Dong-Yun Chen, Gen-Fu Chen, Jia Yu, Lei Zhang, Qi Guo, Qing-Ge Mu, Xiao-Chuan Wang, Zhi-An Ren

arxiv:1604.04964 v1 · 2016-04-18 · cond-mat.supr-con · cond-mat.mtrl-sci

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MMNEQVC4RH6CJ3EHOZNRO7HPH4}

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	2026-05-18T00:37:48.601016Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

631a48545c89fc24ec87765b177cef3f28eb2e649c9052c7ff6032164530624c

Aliases

arxiv: 1604.04964 · arxiv_version: 1604.04964v1 · doi: 10.48550/arxiv.1604.04964 · pith_short_12: MMNEQVC4RH6C · pith_short_16: MMNEQVC4RH6CJ3EH · pith_short_8: MMNEQVC4

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/MMNEQVC4RH6CJ3EHOZNRO7HPH4 \
  | 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: 631a48545c89fc24ec87765b177cef3f28eb2e649c9052c7ff6032164530624c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fbfee8887b0deb2f94d535ce171f7fbf2237f645b852386c06e9015d3afe847c",
    "cross_cats_sorted": [
      "cond-mat.mtrl-sci"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.supr-con",
    "submitted_at": "2016-04-18T02:34:00Z",
    "title_canon_sha256": "1be54ad8b8180eb06b8cd8219bfdb0e48310f96b750641afb10622804e72b6ed"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.04964",
    "kind": "arxiv",
    "version": 1
  }
}