Pith Number

pith:XHT34UVL

pith:2012:XHT34UVLRDB2VZOMEVKGQNTF6W

not attested not anchored not stored refs pending

A minimal model for excitons within time-dependent density-functional theory

Carsten A. Ullrich, Yonghui Li, Zeng-hui Yang

arxiv:1202.4779 v1 · 2012-02-21 · cond-mat.mtrl-sci · cond-mat.other

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XHT34UVLRDB2VZOMEVKGQNTF6W}

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	2026-05-18T01:58:22.655020Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b9e7be52ab88c3aae5cc2554683665f5ac2053be0acbad0ec96fae7ef3cecf18

Aliases

arxiv: 1202.4779 · arxiv_version: 1202.4779v1 · doi: 10.48550/arxiv.1202.4779 · pith_short_12: XHT34UVLRDB2 · pith_short_16: XHT34UVLRDB2VZOM · pith_short_8: XHT34UVL

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/XHT34UVLRDB2VZOMEVKGQNTF6W \
  | 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: b9e7be52ab88c3aae5cc2554683665f5ac2053be0acbad0ec96fae7ef3cecf18

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9d1efdb6e0b50e4b898dae0e899d69b1a2b54c01a1297a8350f68f7be1a983c6",
    "cross_cats_sorted": [
      "cond-mat.other"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.mtrl-sci",
    "submitted_at": "2012-02-21T22:14:18Z",
    "title_canon_sha256": "cebaacd6cf4ac2405e67ae30191c33b72a3635c0ded7070febee43aaeffd3e1e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.4779",
    "kind": "arxiv",
    "version": 1
  }
}