Pith Number

pith:KFVEJDG4

pith:2009:KFVEJDG4XQEUCWQHFUYIORUNKA

not attested not anchored not stored refs pending

A metastable superconducting qubit

Andrew J. Kerman

arxiv:0909.4087 v1 · 2009-09-22 · cond-mat.mes-hall · 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{KFVEJDG4XQEUCWQHFUYIORUNKA}

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	2026-05-18T03:10:00.888295Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

516a448cdcbc09415a072d3087468d502b4705e1559208ac61fd55688def4927

Aliases

arxiv: 0909.4087 · arxiv_version: 0909.4087v1 · doi: 10.48550/arxiv.0909.4087 · pith_short_12: KFVEJDG4XQEU · pith_short_16: KFVEJDG4XQEUCWQH · pith_short_8: KFVEJDG4

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/KFVEJDG4XQEUCWQHFUYIORUNKA \
  | 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: 516a448cdcbc09415a072d3087468d502b4705e1559208ac61fd55688def4927

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "50a31443c6dcdd8be63f729728c0f0ebb2255a786e033863a8df06988764915c",
    "cross_cats_sorted": [
      "cond-mat.supr-con"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.mes-hall",
    "submitted_at": "2009-09-22T20:28:51Z",
    "title_canon_sha256": "8f1ca601bd37e133cc6095dffcba8480f8f153fd23435886726b2f525a99b54d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.4087",
    "kind": "arxiv",
    "version": 1
  }
}