Pith Number

pith:XNUQKQDV

pith:2017:XNUQKQDVYTUF4GH6FEQZTORQGF

not attested not anchored not stored refs pending

System calibration method for Fourier ptychographic microscopy

An Pan, Baoli Yao, Dan Dan, Tianyu Zhao, Yan Zhang, Zhaojun Wang

arxiv:1703.06764 v1 · 2017-03-16 · physics.ins-det · 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{XNUQKQDVYTUF4GH6FEQZTORQGF}

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	2026-05-18T00:35:09.209271Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bb69054075c4e85e18fe292199ba303171417115f4f6a9fc938ced87aef4d6f8

Aliases

arxiv: 1703.06764 · arxiv_version: 1703.06764v1 · doi: 10.48550/arxiv.1703.06764 · pith_short_12: XNUQKQDVYTUF · pith_short_16: XNUQKQDVYTUF4GH6 · pith_short_8: XNUQKQDV

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/XNUQKQDVYTUF4GH6FEQZTORQGF \
  | 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: bb69054075c4e85e18fe292199ba303171417115f4f6a9fc938ced87aef4d6f8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6467d543266703d1764eb9bd633a6eb733c271132a33347d2ec63255f532407e",
    "cross_cats_sorted": [
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ins-det",
    "submitted_at": "2017-03-16T07:50:49Z",
    "title_canon_sha256": "d6684129cbf1fc20cd6e19941360da7c25e00efdf9754e14af29937106166c66"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.06764",
    "kind": "arxiv",
    "version": 1
  }
}