Pith Number

pith:IRKFY7Q7

pith:2018:IRKFY7Q7NSZUZ4YVH5YMD6LHFC

not attested not anchored not stored refs pending

Geometric-phase microscopy for quantitative phase imaging of isotropic, birefringent and space-variant polarization samples

Lenka \v{S}trbkov\'a, Petr Bouchal, Radim Chmel\'ik, Zbyn\v{e}k Dost\'al, Zden\v{e}k Bouchal

arxiv:1811.08664 v1 · 2018-11-21 · 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{IRKFY7Q7NSZUZ4YVH5YMD6LHFC}

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	2026-05-17T23:51:05.280641Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

44545c7e1f6cb34cf3153f70c1f967288ca5cd73de1135f22f1904ff7c5e90d0

Aliases

arxiv: 1811.08664 · arxiv_version: 1811.08664v1 · doi: 10.48550/arxiv.1811.08664 · pith_short_12: IRKFY7Q7NSZU · pith_short_16: IRKFY7Q7NSZUZ4YV · pith_short_8: IRKFY7Q7

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/IRKFY7Q7NSZUZ4YVH5YMD6LHFC \
  | 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: 44545c7e1f6cb34cf3153f70c1f967288ca5cd73de1135f22f1904ff7c5e90d0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6acc6f4d9defe37a43e5165430789054052b5b84575b8c8421442bbd49655d08",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2018-11-21T10:16:38Z",
    "title_canon_sha256": "c9bb879fad5f7f265e4d8f3cdf253fb683f98ddcb502d21cf828e8d26b7d299f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.08664",
    "kind": "arxiv",
    "version": 1
  }
}