Pith Number

pith:NO4CUSTG

pith:2019:NO4CUSTGHH5ZIR2OWSPHKLOBCA

not attested not anchored not stored refs pending

Empathic Robot for Group Learning: A Field Study

Ana Paiva, Francisco S. Melo, Ginevra Castellano, Patricia Alves-Oliveira, Pedro Sequeira

arxiv:1902.01800 v1 · 2019-02-05 · cs.HC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NO4CUSTGHH5ZIR2OWSPHKLOBCA}

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	2026-05-17T23:54:42.302396Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6bb82a4a6639fb94474eb49e752dc11037f9e64e9cc16768533835428337b9f8

Aliases

arxiv: 1902.01800 · arxiv_version: 1902.01800v1 · doi: 10.48550/arxiv.1902.01800 · pith_short_12: NO4CUSTGHH5Z · pith_short_16: NO4CUSTGHH5ZIR2O · pith_short_8: NO4CUSTG

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/NO4CUSTGHH5ZIR2OWSPHKLOBCA \
  | 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: 6bb82a4a6639fb94474eb49e752dc11037f9e64e9cc16768533835428337b9f8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8481f1fe1f9bdaa0f812b7f9562d8bed94a76728cf295eabbc54b4bfd24e1904",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.HC",
    "submitted_at": "2019-02-05T17:15:29Z",
    "title_canon_sha256": "c7758d49867557e49c4d9c11721a2cf12af90e0a0747028a926c8435ac048ae6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.01800",
    "kind": "arxiv",
    "version": 1
  }
}