Pith Number

pith:27ON2LO5

pith:2022:27ON2LO5FVR5RV5SD5PU3PRZ5G

not attested not anchored not stored refs pending

Machine learning enabled multiple illumination quantitative optoacoustic imaging of blood oxygenation in humans

Martin Frenz, Michael Jaeger, Thomas Kirchner

arxiv:2202.01482 v1 · 2022-02-03 · physics.med-ph · eess.IV

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{27ON2LO5FVR5RV5SD5PU3PRZ5G}

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	2026-07-05T03:53:54.816290Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d7dcdd2ddd2d63d8d7b21f5f4dbe39e9b1c976d69b5366251845383741ae2eb0

Aliases

arxiv: 2202.01482 · arxiv_version: 2202.01482v1 · doi: 10.48550/arxiv.2202.01482 · pith_short_12: 27ON2LO5FVR5 · pith_short_16: 27ON2LO5FVR5RV5S · pith_short_8: 27ON2LO5

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/27ON2LO5FVR5RV5SD5PU3PRZ5G \
  | 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: d7dcdd2ddd2d63d8d7b21f5f4dbe39e9b1c976d69b5366251845383741ae2eb0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3d17ec528a3cf2487630d0ad2d01f34cb62b5e44779c8904cec74805d1ca036f",
    "cross_cats_sorted": [
      "eess.IV"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.med-ph",
    "submitted_at": "2022-02-03T09:17:52Z",
    "title_canon_sha256": "ab7db85f4d3bef1841ec0697fd858a1336f03134d9fecc9943f45e679b53cd6b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2202.01482",
    "kind": "arxiv",
    "version": 1
  }
}