Pith Number

pith:WHN7B3GP

pith:2015:WHN7B3GP4IGX44JYGOHRFYLAIM

not attested not anchored not stored refs pending

Personalized Course Sequence Recommendations

Jie Xu, Mihaela van der Schaar, Tianwei Xing

arxiv:1512.09176 v2 · 2015-12-30 · cs.CY · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WHN7B3GP4IGX44JYGOHRFYLAIM}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T01:04:21.760947Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b1dbf0eccfe20d7e7138338f12e160433675ef3fc247c6a16ce2566103e1a9b8

Aliases

arxiv: 1512.09176 · arxiv_version: 1512.09176v2 · doi: 10.48550/arxiv.1512.09176 · pith_short_12: WHN7B3GP4IGX · pith_short_16: WHN7B3GP4IGX44JY · pith_short_8: WHN7B3GP

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/WHN7B3GP4IGX44JYGOHRFYLAIM \
  | 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: b1dbf0eccfe20d7e7138338f12e160433675ef3fc247c6a16ce2566103e1a9b8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0d26e5285fa0d48776dbad4d426efa79bee2878eb5a6ada6a567cbb5643b15b9",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CY",
    "submitted_at": "2015-12-30T22:57:13Z",
    "title_canon_sha256": "ad81f06c5759765f9c2b822884210dda6174b329a833a15001b13e14ef37936f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.09176",
    "kind": "arxiv",
    "version": 2
  }
}