Pith Number

pith:3B2KSKHO

pith:2024:3B2KSKHOP3CP7WBQXNTFEBE23V

not attested not anchored not stored refs pending

Smartphone tristimulus colorimetry for skin-tone analysis at common pulse oximetry anatomical sites

Gannon Lemaster, Joshua A. Burrow, Kimani C. Toussaint Jr, Rutendo Jakachira

arxiv:2411.13832 v1 · 2024-11-21 · physics.med-ph · 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{3B2KSKHOP3CP7WBQXNTFEBE23V}

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	2026-07-05T09:38:37.763529Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d874a928ee7ec4ffd830bb6652049add583c7d307af3a8971476d9975a9abf29

Aliases

arxiv: 2411.13832 · arxiv_version: 2411.13832v1 · doi: 10.48550/arxiv.2411.13832 · pith_short_12: 3B2KSKHOP3CP · pith_short_16: 3B2KSKHOP3CP7WBQ · pith_short_8: 3B2KSKHO

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/3B2KSKHOP3CP7WBQXNTFEBE23V \
  | 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: d874a928ee7ec4ffd830bb6652049add583c7d307af3a8971476d9975a9abf29

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "93c7e73c9cc6834f9bb776964e3d79d0bed4767a0065599fa21fed46dbdb7487",
    "cross_cats_sorted": [
      "physics.optics"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "physics.med-ph",
    "submitted_at": "2024-11-21T04:47:49Z",
    "title_canon_sha256": "c20c6ca35bf1ce2fed3a444ceeba59101fca39d181c6cca6f6545f5b8973fd36"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2411.13832",
    "kind": "arxiv",
    "version": 1
  }
}