Pith Number

pith:NR23U6QV

pith:2019:NR23U6QVN7RW23AFBZCRL2RLEC

not attested not anchored not stored refs pending

Spectra: A Specification Language for Reactive Systems

Jan Oliver Ringert, Shahar Maoz

arxiv:1904.06668 v1 · 2019-04-14 · cs.SE · cs.LO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NR23U6QVN7RW23AFBZCRL2RLEC}

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	2026-05-17T23:48:36.578537Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6c75ba7a156fe36d6c050e4515ea2b20b3a6ec2abb025fbe7be764138af3cad2

Aliases

arxiv: 1904.06668 · arxiv_version: 1904.06668v1 · doi: 10.48550/arxiv.1904.06668 · pith_short_12: NR23U6QVN7RW · pith_short_16: NR23U6QVN7RW23AF · pith_short_8: NR23U6QV

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/NR23U6QVN7RW23AFBZCRL2RLEC \
  | 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: 6c75ba7a156fe36d6c050e4515ea2b20b3a6ec2abb025fbe7be764138af3cad2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "61af9aba7030a6d980b0f8c7698b57528c845c55646696b19d4ea1ab6e44a604",
    "cross_cats_sorted": [
      "cs.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2019-04-14T10:00:43Z",
    "title_canon_sha256": "49079f55a8e196885cb1d262059422f40076d89a4a5a76083a84e70b92dca338"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.06668",
    "kind": "arxiv",
    "version": 1
  }
}