Pith Number

pith:M25TIQZT

pith:2017:M25TIQZTDRK4ENQAHP7TPU4P5Q

not attested not anchored not stored refs pending

The Ensemble Kalman Filter: A Signal Processing Perspective

Carsten Fritsche, Fredrik Gustafsson, Gustaf Hendeby, Michael Roth

arxiv:1702.08061 v2 · 2017-02-26 · stat.ME · cs.SY · 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{M25TIQZTDRK4ENQAHP7TPU4P5Q}

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	2026-05-18T00:23:59.103224Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

66bb3443331c55c236003bff37d38fec38250326c83fc2c19ad26c464bb33d74

Aliases

arxiv: 1702.08061 · arxiv_version: 1702.08061v2 · doi: 10.48550/arxiv.1702.08061 · pith_short_12: M25TIQZTDRK4 · pith_short_16: M25TIQZTDRK4ENQA · pith_short_8: M25TIQZT

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/M25TIQZTDRK4ENQAHP7TPU4P5Q \
  | 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: 66bb3443331c55c236003bff37d38fec38250326c83fc2c19ad26c464bb33d74

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5b7891ab96d329a59e1065d233c6bea1658c90a534e439f5181b81c81b59410c",
    "cross_cats_sorted": [
      "cs.SY",
      "stat.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ME",
    "submitted_at": "2017-02-26T17:50:28Z",
    "title_canon_sha256": "4847c172fb4005e4d5dc64d0f5a03befb2e0cb380a761aaf21303d3b1b3e9bf7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.08061",
    "kind": "arxiv",
    "version": 2
  }
}