Pith Number

pith:UUHKHC5I

pith:2019:UUHKHC5IPUHWPBA3WIFY2THJWB

not attested not anchored not stored refs pending

Parametric shape optimization for combined additive-subtractive manufacturing

Christian Altenhofen, Federico Marini, Lorenzo Tamellini, Marco Attene, Marco Livesu, Massimiliano Martinelli, Michele Chiumenti, Oliver Barrowclough, Vibeke Skytt

arxiv:1907.01370 v2 · 2019-06-26 · cs.CE · cs.SY · eess.SY · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UUHKHC5IPUHWPBA3WIFY2THJWB}

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	2026-05-17T23:41:36.008761Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a50ea38ba87d0f67841bb20b8d4ce9b048066f6acb7fdd97c888c69af006a812

Aliases

arxiv: 1907.01370 · arxiv_version: 1907.01370v2 · doi: 10.48550/arxiv.1907.01370 · pith_short_12: UUHKHC5IPUHW · pith_short_16: UUHKHC5IPUHWPBA3 · pith_short_8: UUHKHC5I

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/UUHKHC5IPUHWPBA3WIFY2THJWB \
  | 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: a50ea38ba87d0f67841bb20b8d4ce9b048066f6acb7fdd97c888c69af006a812

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6bdc5e5712ac07ad3601518b28bde09af2254ca866635466e89db4c0f9799330",
    "cross_cats_sorted": [
      "cs.SY",
      "eess.SY",
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CE",
    "submitted_at": "2019-06-26T08:18:01Z",
    "title_canon_sha256": "622490a347413ffd4a0a10dba9bd3889151858923db838dc557c652905a548b9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.01370",
    "kind": "arxiv",
    "version": 2
  }
}