Pith Number

pith:VYF5ZO7B

pith:2009:VYF5ZO7B6MYHNKB3WSU6EX45DW

not attested not anchored not stored refs pending

Specific heat jump at the superconducting transition temperature in Ba(Fe(1-x)Cox)2As2 and Ba(Fe(1-x)Nix)2As2 single crystals

Ni Ni, Paul C. Canfield, Sergey L. Bud'ko

arxiv:0905.2955 v1 · 2009-05-18 · 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{VYF5ZO7B6MYHNKB3WSU6EX45DW}

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	2026-05-18T02:13:38.817124Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ae0bdcbbe1f33076a83bb4a9e25f9d1d8e2019646326469cde55e37f900ffa77

Aliases

arxiv: 0905.2955 · arxiv_version: 0905.2955v1 · doi: 10.48550/arxiv.0905.2955 · pith_short_12: VYF5ZO7B6MYH · pith_short_16: VYF5ZO7B6MYHNKB3 · pith_short_8: VYF5ZO7B

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/VYF5ZO7B6MYHNKB3WSU6EX45DW \
  | 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: ae0bdcbbe1f33076a83bb4a9e25f9d1d8e2019646326469cde55e37f900ffa77

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f6980fdf09ce6c82996d9bcf4d500fc7c6d144bce9e88907230dc0f4c96efb24",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.supr-con",
    "submitted_at": "2009-05-18T19:23:02Z",
    "title_canon_sha256": "f598d7f00be901fb6f85bc36be9946e73fd4a24df66c40c5669ea97429b14136"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.2955",
    "kind": "arxiv",
    "version": 1
  }
}