Pith Number

pith:UWDPTECW

pith:2016:UWDPTECWM4RRRBV7F6J77VERAD

not attested not anchored not stored refs pending

Second-Order Extended Kalman Filter for Extended Object and Group Tracking

Marcus Baum, Shishan Yang

arxiv:1604.00219 v2 · 2016-04-01 · cs.SY

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UWDPTECWM4RRRBV7F6J77VERAD}

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	2026-05-18T00:15:02.488999Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a586f9905667231886bf2f93ffd49100e7fd870b0fb57601140abb6436712575

Aliases

arxiv: 1604.00219 · arxiv_version: 1604.00219v2 · doi: 10.48550/arxiv.1604.00219 · pith_short_12: UWDPTECWM4RR · pith_short_16: UWDPTECWM4RRRBV7 · pith_short_8: UWDPTECW

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/UWDPTECWM4RRRBV7F6J77VERAD \
  | 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: a586f9905667231886bf2f93ffd49100e7fd870b0fb57601140abb6436712575

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "42b633cacf9579fcbadb54de353811a064619575a8da6d7dca073aa9c14e2685",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SY",
    "submitted_at": "2016-04-01T12:27:28Z",
    "title_canon_sha256": "bbc4017a0e54e29ba7645795e805e9de43200c9a12d166c8b18ac00dc5e83418"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.00219",
    "kind": "arxiv",
    "version": 2
  }
}