Pith Number

pith:IQMMA3P2

pith:2021:IQMMA3P2E4LMDQWIQ7AXYEAM5S

not attested not anchored not stored refs pending

Long-term impact of a primary school intervention on aspects of Einsteinian physics

David Blair, Kyla Adams, Roshan Dattatri, Tejinder Kaur

arxiv:2104.09773 v2 · 2021-04-20 · 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{IQMMA3P2E4LMDQWIQ7AXYEAM5S}

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	2026-07-05T03:04:24.024272Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4418c06dfa2716c1c2c887c17c100cecbb47715d4f6b003dab89cd174238d980

Aliases

arxiv: 2104.09773 · arxiv_version: 2104.09773v2 · doi: 10.48550/arxiv.2104.09773 · pith_short_12: IQMMA3P2E4LM · pith_short_16: IQMMA3P2E4LMDQWI · pith_short_8: IQMMA3P2

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/IQMMA3P2E4LMDQWIQ7AXYEAM5S \
  | 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: 4418c06dfa2716c1c2c887c17c100cecbb47715d4f6b003dab89cd174238d980

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c2c2a6c551fa3c78a06fa4383252fdac023a5248dcff62e0f6599fb743b045f9",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2021-04-20T06:05:25Z",
    "title_canon_sha256": "33f86275af1fab58161411b0169ae95ee39b1c1972100f92ea3487d882963632"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.09773",
    "kind": "arxiv",
    "version": 2
  }
}