Pith Number

pith:UNHW6OIH

pith:1995:UNHW6OIH5SXNKFJN4MQLWRWNBH

not attested not anchored not stored refs pending

A Variational Estimate of the Binding Energy of Charge-Transfer Excitons in the Cuprate Superconductors.

C. Vermeulen, W. Barford

arxiv:cond-mat/9502096 v1 · 1995-02-23 · cond-mat

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UNHW6OIH5SXNKFJN4MQLWRWNBH}

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	2026-05-18T01:07:11.980985Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a34f6f3907ecaed5152de320bb46cd09e61033b88413a061031b4b1f3e3408e0

Aliases

arxiv: cond-mat/9502096 · arxiv_version: cond-mat/9502096v1 · doi: 10.48550/arxiv.cond-mat/9502096 · pith_short_12: UNHW6OIH5SXN · pith_short_16: UNHW6OIH5SXNKFJN · pith_short_8: UNHW6OIH

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/UNHW6OIH5SXNKFJN4MQLWRWNBH \
  | 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: a34f6f3907ecaed5152de320bb46cd09e61033b88413a061031b4b1f3e3408e0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9db1ea87db9166724c581db833277b05ca041f92c52c226f6ecdfcc7d16304ec",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "cond-mat",
    "submitted_at": "1995-02-23T14:44:27Z",
    "title_canon_sha256": "3a985ad646e94d17063cc4203cc6bcc6055251d46ee089cc2e3d3f325b76955c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "cond-mat/9502096",
    "kind": "arxiv",
    "version": 1
  }
}