Pith Number

pith:63OIINTE

pith:2018:63OIINTE5YN4UDCD6SOITGYEBB

not attested not anchored not stored refs pending

Ensemble Kalman Filters for reliability estimation in perfusion inference

Peter Zaspel

arxiv:1810.09290 v1 · 2018-10-22 · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{63OIINTE5YN4UDCD6SOITGYEBB}

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	2026-05-18T00:02:40.573346Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f6dc843664ee1bca0c43f49c899b04086a787e5c26f23cb7e0c20d3b08df8324

Aliases

arxiv: 1810.09290 · arxiv_version: 1810.09290v1 · doi: 10.48550/arxiv.1810.09290 · pith_short_12: 63OIINTE5YN4 · pith_short_16: 63OIINTE5YN4UDCD · pith_short_8: 63OIINTE

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/63OIINTE5YN4UDCD6SOITGYEBB \
  | 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: f6dc843664ee1bca0c43f49c899b04086a787e5c26f23cb7e0c20d3b08df8324

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1fa0680c93e96490bc77d0cdca8e8be86b02f6612ea7f7624f2326273be5f239",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-10-22T13:53:35Z",
    "title_canon_sha256": "eaac376069c0978c38593b51a9fac13e4dfbc4cf7151222abcaf1cc0cbda3845"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.09290",
    "kind": "arxiv",
    "version": 1
  }
}