Pith Number

pith:UKJUKAKP

pith:2019:UKJUKAKPG6LMDCCJF2TLAWQODJ

not attested not anchored not stored refs pending

Systematic design of the color point of a white LED

Ad Lagendijk, Gilles Vissenberg, Maryna L. Meretska, Wilbert L. IJzerman, Willem L. Vos

arxiv:1902.06887 v1 · 2019-02-19 · 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{UKJUKAKPG6LMDCCJF2TLAWQODJ}

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	2026-07-05T00:34:14.448526Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a29345014f3796c188492ea6b05a0e1a67edb2b89d1c6dc606143b6518ecfe28

Aliases

arxiv: 1902.06887 · arxiv_version: 1902.06887v1 · doi: 10.48550/arxiv.1902.06887 · pith_short_12: UKJUKAKPG6LM · pith_short_16: UKJUKAKPG6LMDCCJ · pith_short_8: UKJUKAKP

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/UKJUKAKPG6LMDCCJF2TLAWQODJ \
  | 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: a29345014f3796c188492ea6b05a0e1a67edb2b89d1c6dc606143b6518ecfe28

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1513b80e7d1d48035ba1ab75f5e2b65b42d3b14ff22334581b43562d4df1625c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2019-02-19T04:13:10Z",
    "title_canon_sha256": "ced477588537b35ef24b3bee025da31fcf0b5ce1803d9060eb29a5d74e2334e1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.06887",
    "kind": "arxiv",
    "version": 1
  }
}