Pith Number

pith:D7B4QBD6

pith:2015:D7B4QBD6R6STRBBINX77U5K2UZ

not attested not anchored not stored refs pending

Quantum Spectrum Testing

John Wright, Ryan O'Donnell

arxiv:1501.05028 v1 · 2015-01-21 · quant-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{D7B4QBD6R6STRBBINX77U5K2UZ}

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	2026-05-18T02:29:00.900857Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1fc3c8047e8fa53884286dfffa755aa651eb827525b8b4cada976fbbb715fbbc

Aliases

arxiv: 1501.05028 · arxiv_version: 1501.05028v1 · doi: 10.48550/arxiv.1501.05028 · pith_short_12: D7B4QBD6R6ST · pith_short_16: D7B4QBD6R6STRBBI · pith_short_8: D7B4QBD6

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/D7B4QBD6R6STRBBINX77U5K2UZ \
  | 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: 1fc3c8047e8fa53884286dfffa755aa651eb827525b8b4cada976fbbb715fbbc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3ff0652d058dcd8868734dbef6a9f800075fde7d362c540f99d387478f84248d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2015-01-21T00:42:29Z",
    "title_canon_sha256": "9ea8b10024ae7309a21d9471679474fde736ffd5c8364b2c58e6fd507c35323c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.05028",
    "kind": "arxiv",
    "version": 1
  }
}