Pith Number

pith:IPDL7MJG

pith:2020:IPDL7MJGVJPUBZPC2DWRAHSZU4

not attested not anchored not stored refs pending

A fast approximate skeleton with guarantees for any cloud of points in a Euclidean space

Di Liu, Vitaliy Kurlin, Yury Elkin

arxiv:2007.08900 v1 · 2020-07-17 · 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{IPDL7MJGVJPUBZPC2DWRAHSZU4}

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	2026-07-05T01:19:58.605905Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

43c6bfb126aa5f40e5e2d0ed101e59a7019e11e4ff1d687e2a253081923a3b36

Aliases

arxiv: 2007.08900 · arxiv_version: 2007.08900v1 · doi: 10.48550/arxiv.2007.08900 · pith_short_12: IPDL7MJGVJPU · pith_short_16: IPDL7MJGVJPUBZPC · pith_short_8: IPDL7MJG

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/IPDL7MJGVJPUBZPC2DWRAHSZU4 \
  | 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: 43c6bfb126aa5f40e5e2d0ed101e59a7019e11e4ff1d687e2a253081923a3b36

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7c0e4621c7e4b0f3fae19d63700ae407185011efa4d8d60fa5ec48dfa9aabbcf",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2020-07-17T11:04:59Z",
    "title_canon_sha256": "511f1bd5320a5ef09adde0b71558c3fe55d4b2405f4ce4be0d9208d727f5608e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2007.08900",
    "kind": "arxiv",
    "version": 1
  }
}