Pith Number

pith:HIMWO4OF

pith:2017:HIMWO4OFFQG6PNAHYM6KBVKEAC

not attested not anchored not stored refs pending

Reciprocal Recommender System for Learners in Massive Open Online Courses (MOOCs)

Gerasimos Spanakis, Osmar Zaiane, Sankalp Prabhakar

arxiv:1707.00331 v1 · 2017-07-02 · cs.IR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HIMWO4OFFQG6PNAHYM6KBVKEAC}

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	2026-05-18T00:41:03.701764Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3a196771c52c0de7b407c33ca0d54400a5e4fe2b973373412bd8db315444afd3

Aliases

arxiv: 1707.00331 · arxiv_version: 1707.00331v1 · doi: 10.48550/arxiv.1707.00331 · pith_short_12: HIMWO4OFFQG6 · pith_short_16: HIMWO4OFFQG6PNAH · pith_short_8: HIMWO4OF

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/HIMWO4OFFQG6PNAHYM6KBVKEAC \
  | 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: 3a196771c52c0de7b407c33ca0d54400a5e4fe2b973373412bd8db315444afd3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dca41bebe29b01a2d53d014b3b385c0bf2fe0d68f97204c1d37f79a5ed5a188c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2017-07-02T18:13:50Z",
    "title_canon_sha256": "d73bffeb0e5c858482d1448b46e46a83673fba9cb5c5303d3b9c5bb0958c73c3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.00331",
    "kind": "arxiv",
    "version": 1
  }
}