Pith Number

pith:DFWXRUUU

pith:2014:DFWXRUUUCFD4RIQOX2V5KCHBGP

not attested not anchored not stored refs pending

Communication Communities in MOOCs

Isis Hjorth, Michael Osborne, Nabeel Gillani, Rebecca Eynon, Stephen Roberts

arxiv:1403.4640 v2 · 2014-03-18 · cs.CY · cs.SI · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DFWXRUUUCFD4RIQOX2V5KCHBGP}

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	2026-05-18T02:54:06.558243Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

196d78d2941147c8a20ebeabd508e133e6a6926f467ff6bd28b7ae3599485dd5

Aliases

arxiv: 1403.4640 · arxiv_version: 1403.4640v2 · doi: 10.48550/arxiv.1403.4640 · pith_short_12: DFWXRUUUCFD4 · pith_short_16: DFWXRUUUCFD4RIQO · pith_short_8: DFWXRUUU

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/DFWXRUUUCFD4RIQOX2V5KCHBGP \
  | 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: 196d78d2941147c8a20ebeabd508e133e6a6926f467ff6bd28b7ae3599485dd5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d5d84b85d15532f884373ee222e536734950c7af98d96e6c753c960c50121af5",
    "cross_cats_sorted": [
      "cs.SI",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CY",
    "submitted_at": "2014-03-18T22:57:24Z",
    "title_canon_sha256": "b47215673b724d237b50ac2ae0a42b4ed4539d9824889732c66edde9a20544e0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.4640",
    "kind": "arxiv",
    "version": 2
  }
}