Pith Number

pith:NQRSWVNE

pith:2025:NQRSWVNE4PDSQ6VMBLYPKCFDMH

not attested not anchored not stored refs pending

The Structure and Interpretation of Quantum Programs I: Foundations

David Wakeham

arxiv:2509.04527 v1 · 2025-09-03 · quant-ph · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NQRSWVNE4PDSQ6VMBLYPKCFDMH}

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	2026-07-05T12:05:24.690800Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6c232b55a4e3c7287aac0af0f508a361f6ecb87f5464399c692f99384f7ef3b9

Aliases

arxiv: 2509.04527 · arxiv_version: 2509.04527v1 · doi: 10.48550/arxiv.2509.04527 · pith_short_12: NQRSWVNE4PDS · pith_short_16: NQRSWVNE4PDSQ6VM · pith_short_8: NQRSWVNE

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/NQRSWVNE4PDSQ6VMBLYPKCFDMH \
  | 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: 6c232b55a4e3c7287aac0af0f508a361f6ecb87f5464399c692f99384f7ef3b9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "203a6d792bc1fe52dd436a1347166e15158ef4e436a69bc16b0a0abcf65401be",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2025-09-03T18:00:23Z",
    "title_canon_sha256": "e3092ac8d54a8258e816dd91ea2fd1de593468bafacf294b5579af8bca2d5ecc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2509.04527",
    "kind": "arxiv",
    "version": 1
  }
}