Pith Number

pith:UOHND3XZ

pith:2026:UOHND3XZ5BQPXT7TUCPJDQKUEX

not attested not anchored not stored refs pending

The Score Kalman Filter

Anthony Bloch, Kaito Iwasaki, Maani Ghaffari, Taeyoung Lee

arxiv:2605.16644 v1 · 2026-05-15 · eess.SY · cs.LG · cs.SY · math.OC · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UOHND3XZ5BQPXT7TUCPJDQKUEX}

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	2026-05-20T00:02:34.094800Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a38ed1eef9e860fbcff3a09e91c15425e89dad943b10e5ff075f50477c5bfeaa

Aliases

arxiv: 2605.16644 · arxiv_version: 2605.16644v1 · doi: 10.48550/arxiv.2605.16644 · pith_short_12: UOHND3XZ5BQP · pith_short_16: UOHND3XZ5BQPXT7T · pith_short_8: UOHND3XZ

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/UOHND3XZ5BQPXT7TUCPJDQKUEX \
  | 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: a38ed1eef9e860fbcff3a09e91c15425e89dad943b10e5ff075f50477c5bfeaa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d2d2e2b1b659f1b95d6442a9347e801e2154ce21625559bc5599ee49c258fa45",
    "cross_cats_sorted": [
      "cs.LG",
      "cs.SY",
      "math.OC",
      "stat.ML"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "eess.SY",
    "submitted_at": "2026-05-15T21:33:00Z",
    "title_canon_sha256": "8eeb2c5e08bcee4667a2228fc3950afe5540ac10abfe28f91d179ed26886eb39"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.16644",
    "kind": "arxiv",
    "version": 1
  }
}