Pith Number

pith:R7PIFFBU

pith:2018:R7PIFFBUL3AGC3EY3PIUPMV6BI

not attested not anchored not stored refs pending

Lung ultrasound surface wave elastography for assessing instititial lung disease

Boran Zhou, Brian Bartholmai, Sanjay Kalra, Thomas Osborn, Xiaoming Zhang

arxiv:1806.03500 v1 · 2018-06-09 · q-bio.TO · eess.SP · physics.med-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{R7PIFFBUL3AGC3EY3PIUPMV6BI}

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	2026-05-17T23:45:38.134437Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8fde8294345ec0616c98dbd147b2be0a16cee2e2141e4df43bf493c7709f03cb

Aliases

arxiv: 1806.03500 · arxiv_version: 1806.03500v1 · doi: 10.48550/arxiv.1806.03500 · pith_short_12: R7PIFFBUL3AG · pith_short_16: R7PIFFBUL3AGC3EY · pith_short_8: R7PIFFBU

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/R7PIFFBUL3AGC3EY3PIUPMV6BI \
  | 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: 8fde8294345ec0616c98dbd147b2be0a16cee2e2141e4df43bf493c7709f03cb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "95d109e6551ae9238c329c320a25cc6bb8d22ae14bf5dd1587c9843da4043d01",
    "cross_cats_sorted": [
      "eess.SP",
      "physics.med-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.TO",
    "submitted_at": "2018-06-09T16:12:26Z",
    "title_canon_sha256": "4a7c2867e1189ddab84c85ac916c98c05f522a5e4a8f36bd71bc292e42f38837"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.03500",
    "kind": "arxiv",
    "version": 1
  }
}