Pith Number

pith:TK4CF6JC

pith:2019:TK4CF6JCRNMZTLZ46SF2H5MSNA

not attested not anchored not stored refs pending

Beyond the Coulson-Fischer point: Characterizing single excitation CI and TDDFT for excited states in single bond dissociations

Adam Rettig, Diptarka Hait, Martin Head-Gordon

arxiv:1908.07081 v1 · 2019-08-19 · physics.chem-ph · physics.comp-ph · quant-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TK4CF6JCRNMZTLZ46SF2H5MSNA}

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	2026-07-05T00:11:22.078142Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9ab822f9228b5999af3cf48ba3f592681f4ab248f1c6267656c4a7c05cb5fbdd

Aliases

arxiv: 1908.07081 · arxiv_version: 1908.07081v1 · doi: 10.48550/arxiv.1908.07081 · pith_short_12: TK4CF6JCRNMZ · pith_short_16: TK4CF6JCRNMZTLZ4 · pith_short_8: TK4CF6JC

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/TK4CF6JCRNMZTLZ46SF2H5MSNA \
  | 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: 9ab822f9228b5999af3cf48ba3f592681f4ab248f1c6267656c4a7c05cb5fbdd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0f2f2d8d3a217f3218f8ebb1e2bbcf407359362d5c92b7348bdc4708b77971f9",
    "cross_cats_sorted": [
      "physics.comp-ph",
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.chem-ph",
    "submitted_at": "2019-08-19T21:44:36Z",
    "title_canon_sha256": "1974af1502d68a2fb20c7043cc5cbf06d42e691b2e03933270fcf963f282c143"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.07081",
    "kind": "arxiv",
    "version": 1
  }
}