Pith Number

pith:3UTU2BLN

pith:2012:3UTU2BLNDRUXF67UUU73BA3N3J

not attested not anchored not stored refs pending

Education for All: Remote testing system with gesture recognition and recording

Rivindu Perera

arxiv:1211.4226 v1 · 2012-11-18 · cs.CY · 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{3UTU2BLNDRUXF67UUU73BA3N3J}

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	2026-05-18T03:40:27.603884Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dd274d056d1c6972fbf4a53fb0836dda4df08e4a988cf22ced43ad8490120b28

Aliases

arxiv: 1211.4226 · arxiv_version: 1211.4226v1 · doi: 10.48550/arxiv.1211.4226 · pith_short_12: 3UTU2BLNDRUX · pith_short_16: 3UTU2BLNDRUXF67U · pith_short_8: 3UTU2BLN

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/3UTU2BLNDRUXF67UUU73BA3N3J \
  | 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: dd274d056d1c6972fbf4a53fb0836dda4df08e4a988cf22ced43ad8490120b28

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "64b748f817da7fb540a734f1a04176d9b9028773a19821c7423513e9dfdac8ca",
    "cross_cats_sorted": [
      "cs.HC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CY",
    "submitted_at": "2012-11-18T15:39:44Z",
    "title_canon_sha256": "c3b9b69994790b661ecd8c8adf74f9a4386c9418dae5c61109b6839a8b7ac65b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.4226",
    "kind": "arxiv",
    "version": 1
  }
}