Pith Number

pith:SOSV35MG

pith:2022:SOSV35MGC2V26XRA5G4GHPMD5Q

not attested not anchored not stored refs pending

PSPACE-Completeness of Reversible Deterministic Systems

Dylan Hendrickson, Erik D. Demaine, Jayson Lynch, Robert A. Hearn

arxiv:2207.07229 v1 · 2022-07-14 · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SOSV35MGC2V26XRA5G4GHPMD5Q}

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	2026-07-05T04:40:29.864071Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

93a55df58616abaf5e20e9b863bd83ec319469c37bd8b7fb47d39ee5ce042fa6

Aliases

arxiv: 2207.07229 · arxiv_version: 2207.07229v1 · doi: 10.48550/arxiv.2207.07229 · pith_short_12: SOSV35MGC2V2 · pith_short_16: SOSV35MGC2V26XRA · pith_short_8: SOSV35MG

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/SOSV35MGC2V26XRA5G4GHPMD5Q \
  | 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: 93a55df58616abaf5e20e9b863bd83ec319469c37bd8b7fb47d39ee5ce042fa6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4855d9937f1daa19683b7388af0b5b52bbb36d9d66fce5e7a8716984c8696290",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2022-07-14T23:31:34Z",
    "title_canon_sha256": "d226af823b2c8f0e64720b3b42ee5a275459b690490879282904a03a0ca91f24"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2207.07229",
    "kind": "arxiv",
    "version": 1
  }
}