Pith Number

pith:PLYYSCQW

pith:2018:PLYYSCQWUDXI7CNYNBUKAK2WFH

not attested not anchored not stored refs pending

Interaction and Student Dropout in Massive Open Online Courses

Ilkka Virtanen, Markus Harju, Teemu Lepp\"anen

arxiv:1810.08043 v1 · 2018-10-13 · cs.CY

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PLYYSCQWUDXI7CNYNBUKAK2WFH}

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	2026-05-18T00:02:50.719365Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7af1890a16a0ee8f89b86868a02b5629cc07037a6ace9504b250eebc00ab28fd

Aliases

arxiv: 1810.08043 · arxiv_version: 1810.08043v1 · doi: 10.48550/arxiv.1810.08043 · pith_short_12: PLYYSCQWUDXI · pith_short_16: PLYYSCQWUDXI7CNY · pith_short_8: PLYYSCQW

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/PLYYSCQWUDXI7CNYNBUKAK2WFH \
  | 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: 7af1890a16a0ee8f89b86868a02b5629cc07037a6ace9504b250eebc00ab28fd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "05aeec2291f22c56bf790f4167423fc546a459a660a1b394aa6f49800d1f9091",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CY",
    "submitted_at": "2018-10-13T08:22:37Z",
    "title_canon_sha256": "5563640e092107a9a249348aed50fe88ca511072d21957bc521a79c479f7b55a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.08043",
    "kind": "arxiv",
    "version": 1
  }
}