Pith Number

pith:BUHD6DBJ

pith:2024:BUHD6DBJ4ZQLQPHGW2VICGYC64

not attested not anchored not stored refs pending

Anatomically and mechanically conforming patient-specific spinal fusion cages designed by full-scale topology optimization

Benedikt Helgason, Daniel Haschtmann, Niels Aage, Stephen J. Ferguson, Thijs Smit

arxiv:2406.17487 v1 · 2024-06-25 · 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{BUHD6DBJ4ZQLQPHGW2VICGYC64}

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	2026-07-05T08:36:35.923220Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0d0e3f0c29e660b83ce6b6aa811b02f72d3a15da87041eecdd8260a0f887c6f4

Aliases

arxiv: 2406.17487 · arxiv_version: 2406.17487v1 · doi: 10.48550/arxiv.2406.17487 · pith_short_12: BUHD6DBJ4ZQL · pith_short_16: BUHD6DBJ4ZQLQPHG · pith_short_8: BUHD6DBJ

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/BUHD6DBJ4ZQLQPHGW2VICGYC64 \
  | 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: 0d0e3f0c29e660b83ce6b6aa811b02f72d3a15da87041eecdd8260a0f887c6f4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d47acf1c4c6f27043a9ff51e69d8ecb8b70ab6743965b3fc6d99e0e742fcb46c",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "physics.med-ph",
    "submitted_at": "2024-06-25T12:12:26Z",
    "title_canon_sha256": "69a3bd342370729fa3fb881826d3021689abd40426d447335c9e2a8701f20227"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2406.17487",
    "kind": "arxiv",
    "version": 1
  }
}