Pith Number

pith:2F2BWKDD

pith:2017:2F2BWKDD2NWWYPLZNQUNMEAUI5

not attested not anchored not stored refs pending

Setting the Foundation for Scientific Inquiry and Computational Thinking in Early Childhood using Lego Machines and Mechanism Education Kit

Ashish Sureka, Vishnu Agrawal

arxiv:1801.06042 v1 · 2017-12-21 · physics.ed-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2F2BWKDD2NWWYPLZNQUNMEAUI5}

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	2026-05-18T00:25:35.779041Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d1741b2863d36d6c3d796c28d61014477c337a0d46663b877d80dfbd5a2e2d25

Aliases

arxiv: 1801.06042 · arxiv_version: 1801.06042v1 · doi: 10.48550/arxiv.1801.06042 · pith_short_12: 2F2BWKDD2NWW · pith_short_16: 2F2BWKDD2NWWYPLZ · pith_short_8: 2F2BWKDD

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/2F2BWKDD2NWWYPLZNQUNMEAUI5 \
  | 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: d1741b2863d36d6c3d796c28d61014477c337a0d46663b877d80dfbd5a2e2d25

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e31c8966a58d1848224a5745ec460a06bd25be33c905571ab2ae93ec8bbcb08b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2017-12-21T04:21:13Z",
    "title_canon_sha256": "745be191ebed8c226755fe4a79c5af0b8d474abbfe3cc906158f043683718bc1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.06042",
    "kind": "arxiv",
    "version": 1
  }
}