Pith Number

pith:H4OAAETB

pith:2008:H4OAAETBLNPSDEAXF2L2HJV46E

not attested not anchored not stored refs pending

Optimal Tracking Controller Design for a Small Scale Helicopter

Agus Budiyono, Singgih S. Wibowo

arxiv:0804.3897 v1 · 2008-04-24 · cs.RO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{H4OAAETBLNPSDEAXF2L2HJV46E}

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	2026-07-04T15:11:08.966887Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3f1c0012615b5f2190172e97a3a6bcf10170a8b76aca9bc7d0c4afb62c06c4e2

Aliases

arxiv: 0804.3897 · arxiv_version: 0804.3897v1 · doi: 10.48550/arxiv.0804.3897 · pith_short_12: H4OAAETBLNPS · pith_short_16: H4OAAETBLNPSDEAX · pith_short_8: H4OAAETB

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/H4OAAETBLNPSDEAXF2L2HJV46E \
  | 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: 3f1c0012615b5f2190172e97a3a6bcf10170a8b76aca9bc7d0c4afb62c06c4e2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b02d6bc4336021871a84e2b69a8e5e61deea53959280d18707157d164d70aa75",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.RO",
    "submitted_at": "2008-04-24T10:58:35Z",
    "title_canon_sha256": "d6cc156f8ed5a59fc181277d336f3002c9fc410080667e987b7720c5cfbd6da7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0804.3897",
    "kind": "arxiv",
    "version": 1
  }
}