Pith Number

pith:7X5EO22E

pith:2019:7X5EO22EG3A6EKBULRVNVFZKPK

not attested not anchored not stored refs pending

Ptychographic modulation engine (PME): a low-cost DIY microscope add-on for coherent super-resolution imaging

Guoan Zheng, He Zhang, Kazunori Hoshino, Pengming Song, Pouria Hoveida, Shaowei Jiang, Zichao Bian

arxiv:1908.05761 v2 · 2019-08-13 · physics.ins-det · eess.IV · 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{7X5EO22EG3A6EKBULRVNVFZKPK}

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	2026-07-05T00:07:52.837459Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fdfa476b4436c1e228345c6ada972a7aa1ca5ea2315d73085fe24d345fa14c05

Aliases

arxiv: 1908.05761 · arxiv_version: 1908.05761v2 · doi: 10.48550/arxiv.1908.05761 · pith_short_12: 7X5EO22EG3A6 · pith_short_16: 7X5EO22EG3A6EKBU · pith_short_8: 7X5EO22E

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/7X5EO22EG3A6EKBULRVNVFZKPK \
  | 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: fdfa476b4436c1e228345c6ada972a7aa1ca5ea2315d73085fe24d345fa14c05

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "223e7e1b948978b7dc8130804384916dae9d6016cd797bc805d326ad174c144e",
    "cross_cats_sorted": [
      "eess.IV",
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ins-det",
    "submitted_at": "2019-08-13T18:05:59Z",
    "title_canon_sha256": "e03a0850fe98619d5925dbf39c807de5d5d4d54699fbbc57c0acd9d60b7cdca3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.05761",
    "kind": "arxiv",
    "version": 2
  }
}