Pith Number

pith:BQPR4BFA

pith:2001:BQPR4BFANCKE3TWZVA6BDLWYUG

not attested not anchored not stored refs pending

First-Order Pairing Transition and Single-Particle Spectral Function in the Attractive Hubbard Model

C. Castellani, M. Capone, M. Grilli

arxiv:cond-mat/0109194 v2 · 2001-09-11 · cond-mat.str-el · 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{BQPR4BFANCKE3TWZVA6BDLWYUG}

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	2026-07-04T15:03:29.112078Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0c1f1e04a068944dced9a83c11aed8a1adf9f398c9af119483aba07b325ee34b

Aliases

arxiv: cond-mat/0109194 · arxiv_version: cond-mat/0109194v2 · doi: 10.48550/arxiv.cond-mat/0109194 · pith_short_12: BQPR4BFANCKE · pith_short_16: BQPR4BFANCKE3TWZ · pith_short_8: BQPR4BFA

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/BQPR4BFANCKE3TWZVA6BDLWYUG \
  | 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: 0c1f1e04a068944dced9a83c11aed8a1adf9f398c9af119483aba07b325ee34b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "46a3988b802a0ee584af2053573da5f29cc56cd07ff0e9ca1b19c4099a799239",
    "cross_cats_sorted": [
      "cond-mat.supr-con"
    ],
    "license": "",
    "primary_cat": "cond-mat.str-el",
    "submitted_at": "2001-09-11T13:32:46Z",
    "title_canon_sha256": "9f3f30b9d3699e9fedbbfb8e697c334333bfa6659a979f49729bb1bd637ed498"
  },
  "schema_version": "1.0",
  "source": {
    "id": "cond-mat/0109194",
    "kind": "arxiv",
    "version": 2
  }
}