Pith Number

pith:RGP45SHS

pith:2026:RGP45SHSAUIVUMVFG6TRHYVCSC

not attested not anchored not stored refs pending

Unsupervised Hierarchical Skill Discovery

Benjamin Rosman, Branden Ingram, Damion Harvey, Geraud Nangue Tasse, Steven James

arxiv:2601.23156 v2 · 2026-01-30 · cs.LG · cs.FL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RGP45SHSAUIVUMVFG6TRHYVCSC}

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	2026-05-29T02:05:40.104171Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

899fcec8f205115a32a537a713e2a290ba6a2883279d8ea7533f36195ca0b162

Aliases

arxiv: 2601.23156 · arxiv_version: 2601.23156v2 · doi: 10.48550/arxiv.2601.23156 · pith_short_12: RGP45SHSAUIV · pith_short_16: RGP45SHSAUIVUMVF · pith_short_8: RGP45SHS

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/RGP45SHSAUIVUMVFG6TRHYVCSC \
  | 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: 899fcec8f205115a32a537a713e2a290ba6a2883279d8ea7533f36195ca0b162

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d8184800eb2de58e280f3e65d4637000baf48d546e31301cbb4eed7dadd61f34",
    "cross_cats_sorted": [
      "cs.FL"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2026-01-30T16:41:13Z",
    "title_canon_sha256": "696649f1fa80224ca5ebdb97c75278b55a7d4a5a3ce892ec5f04681ea98f561c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2601.23156",
    "kind": "arxiv",
    "version": 2
  }
}