Pith Number

pith:XIF4HVEM

pith:2018:XIF4HVEMGZAYXLNESTLATAOR5S

not attested not anchored not stored refs pending

A Universal Hypercomputer

Andrew Powell

arxiv:1806.08747 v4 · 2018-06-22 · math.LO · 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{XIF4HVEMGZAYXLNESTLATAOR5S}

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	2026-05-17T23:46:36.263358Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ba0bc3d48c36418bada494d60981d1eca54ea6dc7cdc4aac4e34352e70daee81

Aliases

arxiv: 1806.08747 · arxiv_version: 1806.08747v4 · doi: 10.48550/arxiv.1806.08747 · pith_short_12: XIF4HVEMGZAY · pith_short_16: XIF4HVEMGZAYXLNE · pith_short_8: XIF4HVEM

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/XIF4HVEMGZAYXLNESTLATAOR5S \
  | 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: ba0bc3d48c36418bada494d60981d1eca54ea6dc7cdc4aac4e34352e70daee81

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "53b56cae52cd80c446e2967860e7753820503d938a94af0b62192afd3ad32ab8",
    "cross_cats_sorted": [
      "cs.CC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2018-06-22T16:15:33Z",
    "title_canon_sha256": "99d0ad1da4e4119dc4f5353fa47baec3fb321c88416b368beb276cc0b5c37af8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.08747",
    "kind": "arxiv",
    "version": 4
  }
}