Pith Number

pith:4ZU52ZTJ

pith:2017:4ZU52ZTJPFZD3GB54ENMCNNS5T

not attested not anchored not stored refs pending

Combining freeform optics and curved detectors for wide field imaging: a polynomial approach over squared aperture

Bertrand Chambion, Cristophe Gaschet, David Henry, Eduard Muslimov, Emmanuel Hugot, Marc Ferrari, Sebastien Vives, Wilfried Jahn

arxiv:1706.05520 v1 · 2017-06-17 · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4ZU52ZTJPFZD3GB54ENMCNNS5T}

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	2026-05-18T00:42:09.623044Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e669dd666979723d983de11ac135b2ecf7d50e9b042eee52540956b3890826b3

Aliases

arxiv: 1706.05520 · arxiv_version: 1706.05520v1 · doi: 10.48550/arxiv.1706.05520 · pith_short_12: 4ZU52ZTJPFZD · pith_short_16: 4ZU52ZTJPFZD3GB5 · pith_short_8: 4ZU52ZTJ

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/4ZU52ZTJPFZD3GB54ENMCNNS5T \
  | 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: e669dd666979723d983de11ac135b2ecf7d50e9b042eee52540956b3890826b3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8d504cebcdb66a1c24adf30bf7de1f2e0fa84c8af884dd3bf551b04f0e081833",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2017-06-17T12:10:21Z",
    "title_canon_sha256": "e00ce20e89d7e04cfda333ead335a5a5b1d6228606dfe428df3b2f91e4661910"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1706.05520",
    "kind": "arxiv",
    "version": 1
  }
}