Pith Number

pith:WCQ36CDF

pith:2021:WCQ36CDFYOUP3YDMWBAC26BMBA

not attested not anchored not stored refs pending

State Estimation Using a Network of Distributed Observers With Unknown Inputs

Angelo Barboni, Guitao Yang, Hamed Rezaee, Thomas Parisini

arxiv:2110.05078 v1 · 2021-10-11 · eess.SY · 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{WCQ36CDFYOUP3YDMWBAC26BMBA}

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	2026-07-05T03:21:24.386373Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b0a1bf0865c3a8fde06cb0402d782c0805512632795a1113fba8f4103a7af0eb

Aliases

arxiv: 2110.05078 · arxiv_version: 2110.05078v1 · doi: 10.48550/arxiv.2110.05078 · pith_short_12: WCQ36CDFYOUP · pith_short_16: WCQ36CDFYOUP3YDM · pith_short_8: WCQ36CDF

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/WCQ36CDFYOUP3YDMWBAC26BMBA \
  | 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: b0a1bf0865c3a8fde06cb0402d782c0805512632795a1113fba8f4103a7af0eb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a2e3cda06bcba4bf66ac2f8bdcbc98673630eebf636576de60330f87d52fe553",
    "cross_cats_sorted": [
      "cs.SY"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "eess.SY",
    "submitted_at": "2021-10-11T08:30:12Z",
    "title_canon_sha256": "7b3454ce3be8678730cf601e28d5edecd68565f836f5ba8e18ba2b05e0c18a37"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2110.05078",
    "kind": "arxiv",
    "version": 1
  }
}