Pith Number

pith:ZZ4YJLFV

pith:2018:ZZ4YJLFVPTYUOWDCXTVO455JUN

not attested not anchored not stored refs pending

Identification of FIR Systems with Binary Input and Output Observations

Alex S. Leong, Erik Weyer, Girish N. Nair

arxiv:1809.06908 v1 · 2018-09-18 · 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{ZZ4YJLFVPTYUOWDCXTVO455JUN}

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	2026-05-18T00:05:21.173240Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ce7984acb57cf1475862bceaee77a9a36df234b9230755a5618b26e963329590

Aliases

arxiv: 1809.06908 · arxiv_version: 1809.06908v1 · doi: 10.48550/arxiv.1809.06908 · pith_short_12: ZZ4YJLFVPTYU · pith_short_16: ZZ4YJLFVPTYUOWDC · pith_short_8: ZZ4YJLFV

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/ZZ4YJLFVPTYUOWDCXTVO455JUN \
  | 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: ce7984acb57cf1475862bceaee77a9a36df234b9230755a5618b26e963329590

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6040daf8b39ee353835aa78a0b83c877001d20886e64c52e7dbc5f2e1da9c991",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SY",
    "submitted_at": "2018-09-18T19:53:00Z",
    "title_canon_sha256": "990896122f17dd3edb4a48a1b29bb5a747bdd95a8dde2f62d718dce47c661589"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.06908",
    "kind": "arxiv",
    "version": 1
  }
}