Pith Number

pith:K2OYGMVQ

pith:1999:K2OYGMVQJQBV5BCZXXJZ46FD5S

not attested not anchored not stored refs pending

Kalman Filter Track Fits and Track Breakpoint Analysis

Alessandro Cardini, Antoine Letessier-Selvon, Boris A. Popov, Pierre Astier, Robert D. Cousins, Tatiana Vinogradova

arxiv:physics/9912034 v1 · 1999-12-16 · physics.data-an

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{K2OYGMVQJQBV5BCZXXJZ46FD5S}

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	2026-07-04T16:15:38.564227Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

569d8332b04c035e8459bdd39e78a3ecb29d89de28a77516875dba440876a05c

Aliases

arxiv: physics/9912034 · arxiv_version: physics/9912034v1 · doi: 10.48550/arxiv.physics/9912034 · pith_short_12: K2OYGMVQJQBV · pith_short_16: K2OYGMVQJQBV5BCZ · pith_short_8: K2OYGMVQ

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/K2OYGMVQJQBV5BCZXXJZ46FD5S \
  | 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: 569d8332b04c035e8459bdd39e78a3ecb29d89de28a77516875dba440876a05c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "933a07d19b5e4e7ba76440b43b834e0cd8b17b3eb8c6755e7bd74f71697d8fc9",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "physics.data-an",
    "submitted_at": "1999-12-16T20:23:23Z",
    "title_canon_sha256": "25f6b9a95a552e9f69fe96828ad9386c7ab6053de300bf5e652bd7dfd012e01e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "physics/9912034",
    "kind": "arxiv",
    "version": 1
  }
}