Pith Number

pith:YQPEVPUD

pith:2021:YQPEVPUDKZJDTTYZLJIWY367H6

not attested not anchored not stored refs pending

3D printed hybrid refractive/diffractive achromat and apochromat for the visible wavelength range

Alois Herkommer, Florian Sterl, Harald Giessen, Michael Schmid, Simon Thiele

arxiv:2107.10255 v1 · 2021-07-19 · 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{YQPEVPUDKZJDTTYZLJIWY367H6}

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	2026-07-05T02:59:58.745837Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c41e4abe83565239cf195a516c6fdf3fab8cf52a2b7f214573ee72b790cf5ce9

Aliases

arxiv: 2107.10255 · arxiv_version: 2107.10255v1 · doi: 10.48550/arxiv.2107.10255 · pith_short_12: YQPEVPUDKZJD · pith_short_16: YQPEVPUDKZJDTTYZ · pith_short_8: YQPEVPUD

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/YQPEVPUDKZJDTTYZLJIWY367H6 \
  | 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: c41e4abe83565239cf195a516c6fdf3fab8cf52a2b7f214573ee72b790cf5ce9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "327fbb3e885bf4c6c76fa5d49653e979095c3816c400a4eae5135f9936434fe5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2021-07-19T20:40:08Z",
    "title_canon_sha256": "464ea7f692fc57b33b8b9ea58ffafeb1e71bcf4053b1568d6c2bc0505b417d11"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2107.10255",
    "kind": "arxiv",
    "version": 1
  }
}