Pith Number

pith:V2WGOUCH

pith:2009:V2WGOUCH22DVDYGWWBWWFG7OZ5

not attested not anchored not stored refs pending

Superconductivity at 31 K in 111 type iron arsenide superconductor NaxFeAs induced by pressure

C. Q. Jin, H. K. Mao, L. Wang, Q. Q. Liu, S. J. Zhang, X. C. Wang, X. H. Yu, Y. Ding, Y.S. Zhao, Y.X. Lv, Z. J. Lin.

arxiv:0912.2025 v1 · 2009-12-10 · cond-mat.supr-con · cond-mat.other · 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{V2WGOUCH22DVDYGWWBWWFG7OZ5}

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	2026-05-18T02:10:24.789055Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aeac675047d68751e0d6b06d629beecf4b7b7963fc800589bf9cfc64d873023d

Aliases

arxiv: 0912.2025 · arxiv_version: 0912.2025v1 · doi: 10.48550/arxiv.0912.2025 · pith_short_12: V2WGOUCH22DV · pith_short_16: V2WGOUCH22DVDYGW · pith_short_8: V2WGOUCH

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/V2WGOUCH22DVDYGWWBWWFG7OZ5 \
  | 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: aeac675047d68751e0d6b06d629beecf4b7b7963fc800589bf9cfc64d873023d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3461dda990e551adc9a6cf921ba229974d934ecd78371140adae87c942c1d720",
    "cross_cats_sorted": [
      "cond-mat.other",
      "cond-mat.str-el"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.supr-con",
    "submitted_at": "2009-12-10T15:52:36Z",
    "title_canon_sha256": "62c8d24cc5f4818897783ac3baf44327286001b17d9a77b01579500214b1118a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.2025",
    "kind": "arxiv",
    "version": 1
  }
}