Pith Number

pith:DVFFIE3V

pith:2018:DVFFIE3V3SW4VNTCVQMN3WZIOH

not attested not anchored not stored refs pending

Interview validation of the Physics Lab Inventory of Critical thinking (PLIC)

Carl Wieman, Katherine N. Quinn, N.G. Holmes

arxiv:1802.02424 v1 · 2018-02-07 · physics.ed-ph

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

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	2026-05-18T00:24:08.352259Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1d4a541375dcadcab662ac18dddb2871d139cd8b1ad014447567d506c09177c5

Aliases

arxiv: 1802.02424 · arxiv_version: 1802.02424v1 · doi: 10.48550/arxiv.1802.02424 · pith_short_12: DVFFIE3V3SW4 · pith_short_16: DVFFIE3V3SW4VNTC · pith_short_8: DVFFIE3V

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/DVFFIE3V3SW4VNTCVQMN3WZIOH \
  | 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: 1d4a541375dcadcab662ac18dddb2871d139cd8b1ad014447567d506c09177c5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aea19ff402bcf3aaaa1fd87abfe040066bda3a9458e289d8eb661bc58000f667",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2018-02-07T14:08:36Z",
    "title_canon_sha256": "c7bf74ba0d6dbe7434d11849b27c94bd4b3a9f3641674502d68947083dd69f11"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.02424",
    "kind": "arxiv",
    "version": 1
  }
}