Pith Number

pith:HDOCTOBQ

pith:2026:HDOCTOBQYUPWR4BUELE2Y2F5FE

not attested not anchored not stored refs pending

HCL-FF: Hierarchical and Contrastive Learning for Forward-Forward Algorithm

C.-C. Jay Kuo, Hong-En Chen, Jie-En Yao

arxiv:2605.24797 v1 · 2026-05-24 · cs.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HDOCTOBQYUPWR4BUELE2Y2F5FE}

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	2026-05-26T01:03:58.842060Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

38dc29b830c51f68f03422c9ac68bd2923e4b9880cb154ec757f83ea0d865a0a

Aliases

arxiv: 2605.24797 · arxiv_version: 2605.24797v1 · doi: 10.48550/arxiv.2605.24797 · pith_short_12: HDOCTOBQYUPW · pith_short_16: HDOCTOBQYUPWR4BU · pith_short_8: HDOCTOBQ

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/HDOCTOBQYUPWR4BUELE2Y2F5FE \
  | 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: 38dc29b830c51f68f03422c9ac68bd2923e4b9880cb154ec757f83ea0d865a0a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "26a7349ded6f2131060b1ea2da6944c631ad7ce7d6779c4abb4f7eff0a285f3a",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2026-05-24T00:48:13Z",
    "title_canon_sha256": "fc076f48383ac25ec67a3ffff84d33903677528466a794d49b591c8944444ee6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.24797",
    "kind": "arxiv",
    "version": 1
  }
}