Pith Number

pith:55LPHDZ2

pith:2017:55LPHDZ2ABDRX5BYU3DHX7D2PF

not attested not anchored not stored refs pending

Learning to Compose Skills

Charles Isbell, Farhan Tejani, Himanshu Sahni, Saurabh Kumar

arxiv:1711.11289 v1 · 2017-11-30 · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{55LPHDZ2ABDRX5BYU3DHX7D2PF}

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	2026-05-18T00:29:11.943138Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ef56f38f3a00471bf438a6c67bfc7a797bfa4042ad224a6c9f865d8326b0c726

Aliases

arxiv: 1711.11289 · arxiv_version: 1711.11289v1 · doi: 10.48550/arxiv.1711.11289 · pith_short_12: 55LPHDZ2ABDR · pith_short_16: 55LPHDZ2ABDRX5BY · pith_short_8: 55LPHDZ2

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/55LPHDZ2ABDRX5BYU3DHX7D2PF \
  | 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: ef56f38f3a00471bf438a6c67bfc7a797bfa4042ad224a6c9f865d8326b0c726

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f9e622e06313f538adef88a4a4e4a94ad64a93359c0b2de504ca91e8e52df2fa",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2017-11-30T09:47:28Z",
    "title_canon_sha256": "23beed96a983115b4d44b593f71a0b568485aa6fcafa641692249c43e66286c5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1711.11289",
    "kind": "arxiv",
    "version": 1
  }
}