Pith Number

pith:22VBCDTI

pith:2021:22VBCDTIRY55I3TI2MZMCIMIJ6

not attested not anchored not stored refs pending

Learning Student Interest Trajectory for MOOCThread Recommendation

Andrew Lan, George Karypis, Jaideep Srivastava, Shalini Pandey

arxiv:2101.05625 v2 · 2021-01-10 · cs.IR · cs.CY · 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{22VBCDTIRY55I3TI2MZMCIMIJ6}

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	2026-07-05T02:07:16.620389Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d6aa110e688e3bd46e68d332c121884fa6c925407113c05a10e0368b54296834

Aliases

arxiv: 2101.05625 · arxiv_version: 2101.05625v2 · doi: 10.48550/arxiv.2101.05625 · pith_short_12: 22VBCDTIRY55 · pith_short_16: 22VBCDTIRY55I3TI · pith_short_8: 22VBCDTI

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/22VBCDTIRY55I3TI2MZMCIMIJ6 \
  | 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: d6aa110e688e3bd46e68d332c121884fa6c925407113c05a10e0368b54296834

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ede88233ec6f0bf4327caf836474402747d259f5110759dd1094ca4868b4ab35",
    "cross_cats_sorted": [
      "cs.CY",
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2021-01-10T10:23:11Z",
    "title_canon_sha256": "66c35be5d45e31b8b4d7a9b6546342e1fe208854deff73ea996064fc838682a1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2101.05625",
    "kind": "arxiv",
    "version": 2
  }
}