Pith Number

pith:PDQBGS6P

pith:2018:PDQBGS6PHLEUMINXGSVQGOJZRB

not attested not anchored not stored refs pending

Tracking of the Internal Jugular Vein in Ultrasound Images Using Optical Flow

Andrew Smith, Ebrahim Karami, Mohamed Shehata

arxiv:1803.03874 v1 · 2018-03-11 · 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{PDQBGS6PHLEUMINXGSVQGOJZRB}

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	2026-05-18T00:21:33.577041Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

78e0134bcf3ac94621b734ab03393988599ec8e4c1766cbe30351312cf278069

Aliases

arxiv: 1803.03874 · arxiv_version: 1803.03874v1 · doi: 10.48550/arxiv.1803.03874 · pith_short_12: PDQBGS6PHLEU · pith_short_16: PDQBGS6PHLEUMINX · pith_short_8: PDQBGS6P

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/PDQBGS6PHLEUMINXGSVQGOJZRB \
  | 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: 78e0134bcf3ac94621b734ab03393988599ec8e4c1766cbe30351312cf278069

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e9c948d994186ee61e7cca7e083d8062768fada03b0aeb35ef9db0e9fe88d489",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.IV",
    "submitted_at": "2018-03-11T01:21:53Z",
    "title_canon_sha256": "71874c1add86fd06564b22933428717304b6cc1b9feacd7f2f0e1ad13a7784bc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.03874",
    "kind": "arxiv",
    "version": 1
  }
}