Pith Number

pith:NNULDHSA

pith:2019:NNULDHSAPUUYIF5GDKDY6YLKLX

not attested not anchored not stored refs pending

Nonlinear Optical Properties and Self-Kerr Effect of Rydberg Excitons in Cu$_2$O

David Ziemkiewicz, Gerard Czajkowski, Karol Karpi\'nski, Sylwia Zieli\'nska-Raczy\'nska

arxiv:1904.02959 v1 · 2019-04-05 · cond-mat.mes-hall · physics.optics

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NNULDHSAPUUYIF5GDKDY6YLKLX}

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	2026-05-17T23:41:42.463396Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6b68b19e407d298417a61a878f616a5dc5dd5cec2442949f68a96ecbd472a242

Aliases

arxiv: 1904.02959 · arxiv_version: 1904.02959v1 · doi: 10.48550/arxiv.1904.02959 · pith_short_12: NNULDHSAPUUY · pith_short_16: NNULDHSAPUUYIF5G · pith_short_8: NNULDHSA

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/NNULDHSAPUUYIF5GDKDY6YLKLX \
  | 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: 6b68b19e407d298417a61a878f616a5dc5dd5cec2442949f68a96ecbd472a242

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3b901478d591b72a1b16ebddbda64851fb59fae6c3ed2d428848028ec7591813",
    "cross_cats_sorted": [
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.mes-hall",
    "submitted_at": "2019-04-05T09:41:25Z",
    "title_canon_sha256": "b48896ea53800075ab3b019b49899b4449d56ad954c065d0317b70d53d64f671"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.02959",
    "kind": "arxiv",
    "version": 1
  }
}