Pith Number

pith:QE2C5G2T

pith:2017:QE2C5G2TATRW55I6OBTL57OB3O

not attested not anchored not stored refs pending

A longitudinal dataset of five years of public activity in the Scratch online community

Andr\'es Monroy-Hern\'andez, Benjamin Mako Hill

arxiv:1702.01184 v1 · 2017-02-03 · cs.CY · cs.HC · cs.SI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QE2C5G2TATRW55I6OBTL57OB3O}

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	2026-05-18T00:51:24.263102Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

81342e9b5304e36ef51e7066befdc1db95fa89a1be494d515aee59fc15fa745b

Aliases

arxiv: 1702.01184 · arxiv_version: 1702.01184v1 · doi: 10.48550/arxiv.1702.01184 · pith_short_12: QE2C5G2TATRW · pith_short_16: QE2C5G2TATRW55I6 · pith_short_8: QE2C5G2T

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/QE2C5G2TATRW55I6OBTL57OB3O \
  | 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: 81342e9b5304e36ef51e7066befdc1db95fa89a1be494d515aee59fc15fa745b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c9aab7c2898c5a03c95dd8a6006af9d390bc8be26a0afb88a230313308ecc85d",
    "cross_cats_sorted": [
      "cs.HC",
      "cs.SI"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CY",
    "submitted_at": "2017-02-03T22:02:24Z",
    "title_canon_sha256": "df18199b0be19528575ab75d032a4626e0893c489793f2ca00ec82a032c3dbe7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.01184",
    "kind": "arxiv",
    "version": 1
  }
}