Pith Number

pith:SGRUEDSE

pith:2019:SGRUEDSEM2QDMBOFOQ7FTWOWBG

not attested not anchored not stored refs pending

Optical Excitations of Chlorophyll $a$ and $b$ Monomers and Dimers

Ask Hjorth Larsen, Bruce Forbes Milne, Duncan John Mowbray, Keenan Lyon, Mar\'ia Rosa Preciado-Rivas

arxiv:1907.09430 v2 · 2019-07-22 · cond-mat.mes-hall · 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{SGRUEDSEM2QDMBOFOQ7FTWOWBG}

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	2026-05-17T23:39:23.553138Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

91a3420e4466a03605c5743e59d9d609993b3fea360ea1c861fdcbdb32ad0c7d

Aliases

arxiv: 1907.09430 · arxiv_version: 1907.09430v2 · doi: 10.48550/arxiv.1907.09430 · pith_short_12: SGRUEDSEM2QD · pith_short_16: SGRUEDSEM2QDMBOF · pith_short_8: SGRUEDSE

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/SGRUEDSEM2QDMBOFOQ7FTWOWBG \
  | 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: 91a3420e4466a03605c5743e59d9d609993b3fea360ea1c861fdcbdb32ad0c7d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0a0470fdf6c47c1de49bd000937b151e379f7a335cbf4749324908f6eae27802",
    "cross_cats_sorted": [
      "physics.comp-ph",
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.mes-hall",
    "submitted_at": "2019-07-22T16:57:49Z",
    "title_canon_sha256": "54ff27c62d79d4ec2263f9810210e315c9981a253ac4baeeb1c6b19ba1a8ae96"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.09430",
    "kind": "arxiv",
    "version": 2
  }
}