Pith Number

pith:6M6JND5I

pith:2013:6M6JND5IY4V5XG5AC5QJJMBNNW

not attested not anchored not stored refs pending

Vector Addition System Reversible Reachability Problem

CNRS), J\'er\^ome Leroux (LaBRI

arxiv:1301.4874 v2 · 2013-01-21 · 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{6M6JND5IY4V5XG5AC5QJJMBNNW}

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	2026-05-18T01:09:33.248027Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f33c968fa8c72bdb9ba0176094b02d6db664e5f6982c6d69493df91de8627e7a

Aliases

arxiv: 1301.4874 · arxiv_version: 1301.4874v2 · doi: 10.48550/arxiv.1301.4874 · pith_short_12: 6M6JND5IY4V5 · pith_short_16: 6M6JND5IY4V5XG5A · pith_short_8: 6M6JND5I

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/6M6JND5IY4V5XG5AC5QJJMBNNW \
  | 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: f33c968fa8c72bdb9ba0176094b02d6db664e5f6982c6d69493df91de8627e7a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9551306fe6b7e1a3ffec0b7f2f92b69d880fc09b82aa2784830c5145a63454d2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2013-01-21T14:25:00Z",
    "title_canon_sha256": "05982f5c93c7eda0baaa07c05c8491153207e85c6fd207ac1fedc22afbdb23ce"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.4874",
    "kind": "arxiv",
    "version": 2
  }
}