Pith Number

pith:AJDHRQJO

pith:2025:AJDHRQJODR56NOJNWS2EGSJPO3

not attested not anchored not stored refs pending

When are safety filters safe? On minimum phase conditions of control barrier functions

Claire J. Tomlin, Jason J. Choi, Koushil Sreenath, Shankar Sastry

arxiv:2508.07684 v1 · 2025-08-11 · 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{AJDHRQJODR56NOJNWS2EGSJPO3}

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	2026-07-05T11:51:50.486177Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

024678c12e1c7be6b92db4b443492f76d5a015f7bcee8ca419aec80c89073fb2

Aliases

arxiv: 2508.07684 · arxiv_version: 2508.07684v1 · doi: 10.48550/arxiv.2508.07684 · pith_short_12: AJDHRQJODR56 · pith_short_16: AJDHRQJODR56NOJN · pith_short_8: AJDHRQJO

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/AJDHRQJODR56NOJNWS2EGSJPO3 \
  | 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: 024678c12e1c7be6b92db4b443492f76d5a015f7bcee8ca419aec80c89073fb2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "12aa0ad1835ef96c74828766940d73aa20095ccdbaccab1f9d970d8598622422",
    "cross_cats_sorted": [
      "cs.SY"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "eess.SY",
    "submitted_at": "2025-08-11T06:59:33Z",
    "title_canon_sha256": "7b2718b1d326b6b8918d9ab4b8be8ed9630291aa40716ae0de9ba9ee75d3b98c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2508.07684",
    "kind": "arxiv",
    "version": 1
  }
}