Pith Number

pith:BYC6RDMB

pith:2026:BYC6RDMBI4OMO4DX6BRTNVFGAS

not attested not anchored not stored refs pending

Advanced PID architectures for tracking changing active constraints

Sigurd Skogestad

arxiv:2605.18463 v1 · 2026-05-18 · 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{BYC6RDMBI4OMO4DX6BRTNVFGAS}

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	2026-05-20T00:06:02.504033Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0e05e88d81471cc77077f06336d4a60484904868f256f2ceb5c790f2a1d01dd4

Aliases

arxiv: 2605.18463 · arxiv_version: 2605.18463v1 · doi: 10.48550/arxiv.2605.18463 · pith_short_12: BYC6RDMBI4OM · pith_short_16: BYC6RDMBI4OMO4DX · pith_short_8: BYC6RDMB

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/BYC6RDMBI4OMO4DX6BRTNVFGAS \
  | 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: 0e05e88d81471cc77077f06336d4a60484904868f256f2ceb5c790f2a1d01dd4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f8dac15672802b5f703420ebc06f7d4509c41dd557de83efae68de272fd66250",
    "cross_cats_sorted": [
      "cs.SY"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.SY",
    "submitted_at": "2026-05-18T14:25:17Z",
    "title_canon_sha256": "699caf6db14f1a8a5c1922f0615b106003c82c3b4ac195f446dc342c87cc8efe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.18463",
    "kind": "arxiv",
    "version": 1
  }
}