Pith Number

pith:I4FANRDD

pith:2019:I4FANRDDXL2BDW3STA5VKW55OR

not attested not anchored not stored refs pending

Nonparametric Finite Time LTI System Identification

Alexander Rakhlin, Munther A. Dahleh, Tuhin Sarkar

arxiv:1902.01848 v6 · 2019-02-05 · 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{I4FANRDDXL2BDW3STA5VKW55OR}

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	2026-06-04T20:13:52.014010Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

470a06c463baf411db72983b555bbd74578eb1229fc838de7598740d62175d86

Aliases

arxiv: 1902.01848 · arxiv_version: 1902.01848v6 · doi: 10.48550/arxiv.1902.01848 · pith_short_12: I4FANRDDXL2B · pith_short_16: I4FANRDDXL2BDW3S · pith_short_8: I4FANRDD

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/I4FANRDDXL2BDW3STA5VKW55OR \
  | 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: 470a06c463baf411db72983b555bbd74578eb1229fc838de7598740d62175d86

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "496d9a051626c715c9406dd718b6328a1c797ab1bc55c436b4c2647a6bedd650",
    "cross_cats_sorted": [
      "cs.SY"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.SY",
    "submitted_at": "2019-02-05T18:42:10Z",
    "title_canon_sha256": "ba4976441833f4c845cd66c206b3ac11924a41b03e87bdfe65ac96d1153bb5c9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.01848",
    "kind": "arxiv",
    "version": 6
  }
}