Pith Number

pith:ZI5QZUUB

pith:2020:ZI5QZUUBRXOHXNC7YDNYNZELJG

not attested not anchored not stored refs pending

Ho:YLF amplifier with Ti:Sapphire frontend for pumping mid-infrared optical parametric amplifier

Bruce Weaver, Esben Larsen, Fangjie Zhou, Krishna Murari, Timur Avni, Yanchun Yin, Yi Wu, Zenghu Chang

arxiv:2004.12648 v1 · 2020-04-27 · 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{ZI5QZUUBRXOHXNC7YDNYNZELJG}

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	2026-07-05T01:46:51.708207Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ca3b0cd2818ddc7bb45fc0db86e48b49819d42db529d9d7bc50b1ac98dc3d053

Aliases

arxiv: 2004.12648 · arxiv_version: 2004.12648v1 · doi: 10.48550/arxiv.2004.12648 · pith_short_12: ZI5QZUUBRXOH · pith_short_16: ZI5QZUUBRXOHXNC7 · pith_short_8: ZI5QZUUB

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/ZI5QZUUBRXOHXNC7YDNYNZELJG \
  | 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: ca3b0cd2818ddc7bb45fc0db86e48b49819d42db529d9d7bc50b1ac98dc3d053

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "361f28070ed7fcf84ec0e9ab21734f1bd0929df7493e534ab88c8e359040448d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2020-04-27T08:51:20Z",
    "title_canon_sha256": "df62d85f5041472612b240d94b9b6508e87ab503b4510ced1715b92119268b12"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.12648",
    "kind": "arxiv",
    "version": 1
  }
}