Pith Number

pith:LQIIZSAN

pith:2019:LQIIZSANT36BTEGASIH7IB6AWY

not attested not anchored not stored refs pending

Refractive index measurements of multicellular tumour spheroids using optical coherence tomography: dependence on growth phase and size

Fr\'ed\'erique Vanholsbeeck, Jacqueline Ross, Kevin Hicks, Neelam Hari, Priyanka Patel

arxiv:1904.04390 v1 · 2019-04-08 · physics.bio-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LQIIZSANT36BTEGASIH7IB6AWY}

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	2026-05-17T23:48:59.123138Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5c108cc80d9efc1990c0920ff407c0b604199c6cdfcf41bd953974d9696add11

Aliases

arxiv: 1904.04390 · arxiv_version: 1904.04390v1 · doi: 10.48550/arxiv.1904.04390 · pith_short_12: LQIIZSANT36B · pith_short_16: LQIIZSANT36BTEGA · pith_short_8: LQIIZSAN

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/LQIIZSANT36BTEGASIH7IB6AWY \
  | 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: 5c108cc80d9efc1990c0920ff407c0b604199c6cdfcf41bd953974d9696add11

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3b6cb738fd53ac406a11d5b9f9428933bbe795b000efa6366e133da381b0e48e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.bio-ph",
    "submitted_at": "2019-04-08T23:06:18Z",
    "title_canon_sha256": "f4ef9f4f3523955b761f12eb3111436c29b82d6abfa041594a8600dbc8fe3b1e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.04390",
    "kind": "arxiv",
    "version": 1
  }
}