Pith Number

pith:TRIYNIGP

pith:2020:TRIYNIGPSNPPVBN5A5EAVIGHQW

not attested not anchored not stored refs pending

A Proof of Useful Work for Artificial Intelligence on the Blockchain

Andrei Lihu, Igor Barjaktarevic, Jincheng Du, Mark Harvilla, Patrick Gerzanics

arxiv:2001.09244 v1 · 2020-01-25 · cs.DC · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TRIYNIGPSNPPVBN5A5EAVIGHQW}

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	2026-07-05T00:35:57.485305Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9c5186a0cf935efa85bd07480aa0c785b636075371d2ee6197b040bccf50e9b5

Aliases

arxiv: 2001.09244 · arxiv_version: 2001.09244v1 · doi: 10.48550/arxiv.2001.09244 · pith_short_12: TRIYNIGPSNPP · pith_short_16: TRIYNIGPSNPPVBN5 · pith_short_8: TRIYNIGP

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/TRIYNIGPSNPPVBN5A5EAVIGHQW \
  | 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: 9c5186a0cf935efa85bd07480aa0c785b636075371d2ee6197b040bccf50e9b5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fdf4297d4189b982852f8d7f7d43c85dd0a383f0b62f05cca03b89bf97ae61d3",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DC",
    "submitted_at": "2020-01-25T01:10:46Z",
    "title_canon_sha256": "a8bdfc93c65cf39ec250d21182fe1a8dc1cae835f99913f4849f3e3675b3432e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2001.09244",
    "kind": "arxiv",
    "version": 1
  }
}