Pith Number

pith:Y3SVM35O

pith:2020:Y3SVM35OKM557JVTBHDV5HXTJK

not attested not anchored not stored refs pending

Trimmed Spline Surfaces with Accurate Boundary Control

Florian Martin, Ulrich Reif

arxiv:2009.02480 v2 · 2020-09-05 · cs.GR · cs.CG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Y3SVM35OKM557JVTBHDV5HXTJK}

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	2026-07-05T02:22:37.871484Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c6e5566fae533bdfa6b309c75e9ef34a9d57d1b4db492cd60af89aa4e66272cc

Aliases

arxiv: 2009.02480 · arxiv_version: 2009.02480v2 · doi: 10.48550/arxiv.2009.02480 · pith_short_12: Y3SVM35OKM55 · pith_short_16: Y3SVM35OKM557JVT · pith_short_8: Y3SVM35O

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/Y3SVM35OKM557JVTBHDV5HXTJK \
  | 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: c6e5566fae533bdfa6b309c75e9ef34a9d57d1b4db492cd60af89aa4e66272cc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a51a5643074830bba0d5693d87b3d04723d90184d8bee1466b00831ad4529f87",
    "cross_cats_sorted": [
      "cs.CG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.GR",
    "submitted_at": "2020-09-05T07:05:11Z",
    "title_canon_sha256": "99cbe992de40dfa4fdcdf0e4976b74d7a0cee9f2ac33fee8e3299871e38f08d6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2009.02480",
    "kind": "arxiv",
    "version": 2
  }
}