Pith Number

pith:6EVTE5FW

pith:2026:6EVTE5FWV3WDL6XNOSA7WHXTFE

not attested not anchored not stored refs pending

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

Abhinaba Basu

arxiv:2606.04819 v1 · 2026-06-03 · cs.CR · cs.CY · cs.DC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6EVTE5FWV3WDL6XNOSA7WHXTFE}

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	2026-06-04T01:09:31.187205Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f12b3274b6aeec35faed7481fb1ef32918b3453af34afee37aa2663606d70b2e

Aliases

arxiv: 2606.04819 · arxiv_version: 2606.04819v1 · doi: 10.48550/arxiv.2606.04819 · pith_short_12: 6EVTE5FWV3WD · pith_short_16: 6EVTE5FWV3WDL6XN · pith_short_8: 6EVTE5FW

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/6EVTE5FWV3WDL6XNOSA7WHXTFE \
  | 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: f12b3274b6aeec35faed7481fb1ef32918b3453af34afee37aa2663606d70b2e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "045eab4864db7ada35a2eb22c172b05cbe5672d326a176b2a93815a9e8f93e1e",
    "cross_cats_sorted": [
      "cs.CY",
      "cs.DC"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2026-06-03T12:42:29Z",
    "title_canon_sha256": "703d7cdab8cea08fba990f158a0b255d4c3f3c39c7955427704f55ae87c9e0a0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.04819",
    "kind": "arxiv",
    "version": 1
  }
}