Pith Number

pith:XFFQNNAK

pith:2022:XFFQNNAKQNPETOG5YMCZNKVJGH

not attested not anchored not stored refs pending

Challenges of Proof-of-Useful-Work (PoUW)

Felix Hoffmann

arxiv:2209.03865 v1 · 2022-09-08 · cs.CR · cs.GT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XFFQNNAKQNPETOG5YMCZNKVJGH}

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.

Cited by

1 paper in Pith

The Usefulness Gap in Proof-of-Useful-Work: An Empirical Study of Pearl's cuPOW Protocol

Receipt and verification

First computed	2026-07-05T04:55:46.570105Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b94b06b40a835e49b8ddc30596aaa931d31b7e9bb5b90d989f90414ae810f011

Aliases

arxiv: 2209.03865 · arxiv_version: 2209.03865v1 · doi: 10.48550/arxiv.2209.03865 · pith_short_12: XFFQNNAKQNPE · pith_short_16: XFFQNNAKQNPETOG5 · pith_short_8: XFFQNNAK

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/XFFQNNAKQNPETOG5YMCZNKVJGH \
  | 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: b94b06b40a835e49b8ddc30596aaa931d31b7e9bb5b90d989f90414ae810f011

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "58b5b90cb0e6cbe22a41e0082dcc129efb3fb2175885bce76b5cd3b7c7856e9f",
    "cross_cats_sorted": [
      "cs.GT"
    ],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2022-09-08T15:08:18Z",
    "title_canon_sha256": "ed2ed98433f4cda73afd089c689d97722eaed0902c7fbb0ee39d4f9f947fd799"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2209.03865",
    "kind": "arxiv",
    "version": 1
  }
}