Pith Number

pith:4OIG5F6Z

pith:2015:4OIG5F6ZBWSMUIGXDXSHFXHDJA

not attested not anchored not stored refs pending

A fast Mixed Model B-splines algorithm

Martin P. Boer

arxiv:1502.04202 v1 · 2015-02-14 · stat.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4OIG5F6ZBWSMUIGXDXSHFXHDJA}

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	2026-05-18T02:27:00.263831Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e3906e97d90da4ca20d71de472dce34808fce165a24eb0650fbfe5797d246752

Aliases

arxiv: 1502.04202 · arxiv_version: 1502.04202v1 · doi: 10.48550/arxiv.1502.04202 · pith_short_12: 4OIG5F6ZBWSM · pith_short_16: 4OIG5F6ZBWSMUIGX · pith_short_8: 4OIG5F6Z

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/4OIG5F6ZBWSMUIGXDXSHFXHDJA \
  | 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: e3906e97d90da4ca20d71de472dce34808fce165a24eb0650fbfe5797d246752

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cec72ccd7576849ccd1e5d7b7cd58a7ba5466e978fb33d9cc9ee0215cf31f3c4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.CO",
    "submitted_at": "2015-02-14T12:28:30Z",
    "title_canon_sha256": "a1d24116458b2de422f69e40b5168b5da75f0a86bf95ef860d16b1083f433980"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.04202",
    "kind": "arxiv",
    "version": 1
  }
}