Pith Number

pith:HQQPK4VR

pith:2024:HQQPK4VRIJ47UP2JTYWQBGFHSV

not attested not anchored not stored refs pending

Student Understanding of the Bloch Sphere

Chandralekha Singh, Peter Hu, Roger S. K. Mong, Yangqiuting Li

arxiv:2403.01047 v1 · 2024-03-02 · 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{HQQPK4VRIJ47UP2JTYWQBGFHSV}

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	2026-07-05T07:51:15.640401Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3c20f572b14279fa3f499e2d0098a7954024f997d0ac42f345073581b61238d0

Aliases

arxiv: 2403.01047 · arxiv_version: 2403.01047v1 · doi: 10.48550/arxiv.2403.01047 · pith_short_12: HQQPK4VRIJ47 · pith_short_16: HQQPK4VRIJ47UP2J · pith_short_8: HQQPK4VR

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/HQQPK4VRIJ47UP2JTYWQBGFHSV \
  | 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: 3c20f572b14279fa3f499e2d0098a7954024f997d0ac42f345073581b61238d0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ac3f2698ff788c06585713e627219f62ce1e1e22f23676b995c8b2ca18193de2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2024-03-02T00:34:56Z",
    "title_canon_sha256": "9ed5cca3cdcf201268e897368365dcc70e276bfbf131db53a6ebe8f5d1a69885"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2403.01047",
    "kind": "arxiv",
    "version": 1
  }
}