Pith Number

pith:ZCNWRFDA

pith:2017:ZCNWRFDAMC2JTGF27LQMT5R4XX

not attested not anchored not stored refs pending

The Free-play Sandbox: a Methodology for the Evaluation of Social Robotics and a Dataset of Social Interactions

Charlotte Edmunds, Emmanuel Senft, S\'everin Lemaignan, Tony Belpaeme

arxiv:1712.02421 v1 · 2017-12-06 · cs.RO · 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{ZCNWRFDAMC2JTGF27LQMT5R4XX}

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	2026-05-18T00:28:34.273665Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c89b68946060b49998bafae0c9f63cbddafb67ca90f697c51ad67d6e0aa13e7b

Aliases

arxiv: 1712.02421 · arxiv_version: 1712.02421v1 · doi: 10.48550/arxiv.1712.02421 · pith_short_12: ZCNWRFDAMC2J · pith_short_16: ZCNWRFDAMC2JTGF2 · pith_short_8: ZCNWRFDA

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/ZCNWRFDAMC2JTGF27LQMT5R4XX \
  | 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: c89b68946060b49998bafae0c9f63cbddafb67ca90f697c51ad67d6e0aa13e7b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4d54f2d6032b00d9f8247688a2bee60d0cef3a32c474e2803afe2fdd23300f46",
    "cross_cats_sorted": [
      "cs.HC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.RO",
    "submitted_at": "2017-12-06T22:15:04Z",
    "title_canon_sha256": "29bddc9623d2f4361295ea48a9928580667e1e5f5f9835d43ab9c8aa676b7396"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.02421",
    "kind": "arxiv",
    "version": 1
  }
}