Pith Number

pith:S7QJFII5

pith:2019:S7QJFII5VQJGZS7B6IEUH4SQCP

not attested not anchored not stored refs pending

Continuous Reachability for Unordered Data Petri nets is in PTime

Piotr Hofman, Preey Shah, S. Akshay, Utkarsh Gupta

arxiv:1902.05604 v1 · 2019-02-14 · cs.FL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{S7QJFII5VQJGZS7B6IEUH4SQCP}

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	2026-05-17T23:53:56.811457Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

97e092a11dac126ccbe1f20943f25013caed0707db4cd84895d1b25c0db2db12

Aliases

arxiv: 1902.05604 · arxiv_version: 1902.05604v1 · doi: 10.48550/arxiv.1902.05604 · pith_short_12: S7QJFII5VQJG · pith_short_16: S7QJFII5VQJGZS7B · pith_short_8: S7QJFII5

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/S7QJFII5VQJGZS7B6IEUH4SQCP \
  | 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: 97e092a11dac126ccbe1f20943f25013caed0707db4cd84895d1b25c0db2db12

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2c8104225beda4a45d40bf2bc0eb80e326a6bbba1ce01db0db66fda947054bff",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2019-02-14T21:05:18Z",
    "title_canon_sha256": "a2ec1084e79c4d50f2282dbd31076784275a62f1a0cf50226c3af88acda2292a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.05604",
    "kind": "arxiv",
    "version": 1
  }
}