Pith Number

pith:CAYDZ7GG

pith:2025:CAYDZ7GGICXCHCZFEG7GGSXDBB

not attested not anchored not stored refs pending

Perturbative Fourier Ptychographic Microscopy for Fast Quantitative Phase Imaging

Jonathan Dong, Kuan-Chen Shen, Laura Waller, Martin Zach, Michael Unser, Ruiming Cao

arxiv:2501.07308 v2 · 2025-01-13 · 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{CAYDZ7GGICXCHCZFEG7GGSXDBB}

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	2026-07-05T10:27:23.421197Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

10303cfcc640ae238b2521be634ae3086819285750e963ca12abdcf8791f6189

Aliases

arxiv: 2501.07308 · arxiv_version: 2501.07308v2 · doi: 10.48550/arxiv.2501.07308 · pith_short_12: CAYDZ7GGICXC · pith_short_16: CAYDZ7GGICXCHCZF · pith_short_8: CAYDZ7GG

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/CAYDZ7GGICXCHCZFEG7GGSXDBB \
  | 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: 10303cfcc640ae238b2521be634ae3086819285750e963ca12abdcf8791f6189

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c75baad10b4e3dd8ffafb5922072f0cdbf047e78a6d3b00245cb4a000cd285c2",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2025-01-13T13:16:52Z",
    "title_canon_sha256": "01d2049fd72edc9ff87a769d014a40584455bbd8386d6539cde7feabc676a714"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2501.07308",
    "kind": "arxiv",
    "version": 2
  }
}