Pith Number

pith:S5QVVESR

pith:2019:S5QVVESRDASRENQR5DHYY4VXKW

not attested not anchored not stored refs pending

Barrier Functions in Cascaded Controller: Safe Quadrotor Control

Abhijit Chatterjee, Mouhyemen Khan, Munzir Zafar

arxiv:1903.09711 v2 · 2019-03-22 · 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{S5QVVESRDASRENQR5DHYY4VXKW}

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	2026-06-04T20:14:16.993881Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

97615a92511825123611e8cf8c72b755b0b6a591b0905d6bcff11a100725912e

Aliases

arxiv: 1903.09711 · arxiv_version: 1903.09711v2 · doi: 10.48550/arxiv.1903.09711 · pith_short_12: S5QVVESRDASR · pith_short_16: S5QVVESRDASRENQR · pith_short_8: S5QVVESR

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/S5QVVESRDASRENQR5DHYY4VXKW \
  | 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: 97615a92511825123611e8cf8c72b755b0b6a591b0905d6bcff11a100725912e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "738cc4b91fea072a7816cef8b2f808fb0e3c0c0749a447d0fee720eb7a352059",
    "cross_cats_sorted": [
      "cs.SY"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.SY",
    "submitted_at": "2019-03-22T21:13:22Z",
    "title_canon_sha256": "8f041e7cfacc47dd0d7ead6c96cb71cb4b834e9873d2e65840f3fc0459edbd59"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.09711",
    "kind": "arxiv",
    "version": 2
  }
}