Pith Number

pith:6P4LIW7C

pith:2018:6P4LIW7CXGPQOFBJ72XTVCY2NF

not attested not anchored not stored refs pending

A Fully Automated System for Sizing Nasal PAP Masks Using Facial Photographs

Benjamin Johnston, Philip de Chazal

arxiv:1811.03773 v1 · 2018-11-09 · cs.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6P4LIW7CXGPQOFBJ72XTVCY2NF}

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	2026-05-18T00:01:12.065942Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f3f8b45be2b99f071429feaf3a8b1a69637d4784cbea943f689562284139899d

Aliases

arxiv: 1811.03773 · arxiv_version: 1811.03773v1 · doi: 10.48550/arxiv.1811.03773 · pith_short_12: 6P4LIW7CXGPQ · pith_short_16: 6P4LIW7CXGPQOFBJ · pith_short_8: 6P4LIW7C

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/6P4LIW7CXGPQOFBJ72XTVCY2NF \
  | 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: f3f8b45be2b99f071429feaf3a8b1a69637d4784cbea943f689562284139899d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d73f783f0dfa0dce426d91f61da278ea1eecb769936abb9d813587475f8c4ad9",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2018-11-09T04:50:53Z",
    "title_canon_sha256": "db54a90bd5bfc752243f83026fc4cd9ee1eed01a3e2d09780e91e2a711ad4dc0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.03773",
    "kind": "arxiv",
    "version": 1
  }
}