Pith Number

pith:KRQASEWD

pith:2026:KRQASEWDZJ5WAEZ3B5PPOBDFGK

not attested not anchored not stored refs pending

Quantitative three-dimensional absorption imaging in standard brightfield microscopes

Chulmin Oh, Herve Hugonnet, Sehyun Lee, Seung-Mo Hong, Weisun Park, Yeon Wook Kim, YongKeun Park, Yoonjae Chung

arxiv:2601.15925 v2 · 2026-01-22 · 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{KRQASEWDZJ5WAEZ3B5PPOBDFGK}

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	2026-05-27T01:04:55.212968Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

54600912c3ca7b60133b0f5ef70465329d6b088621832c8b3d10266a48ae31df

Aliases

arxiv: 2601.15925 · arxiv_version: 2601.15925v2 · doi: 10.48550/arxiv.2601.15925 · pith_short_12: KRQASEWDZJ5W · pith_short_16: KRQASEWDZJ5WAEZ3 · pith_short_8: KRQASEWD

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/KRQASEWDZJ5WAEZ3B5PPOBDFGK \
  | 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: 54600912c3ca7b60133b0f5ef70465329d6b088621832c8b3d10266a48ae31df

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7364387210188768fcff02ec1386020e71015ecf523253167af8b5abf83923c1",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2026-01-22T12:59:28Z",
    "title_canon_sha256": "5bcc7df0c7e2f98da0868c809797e7870c9455774649f62de7b4c68972f96502"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2601.15925",
    "kind": "arxiv",
    "version": 2
  }
}