Pith Number

pith:GJ3YG3CC

pith:2013:GJ3YG3CCWGCIQIYIEV3HL56M4S

not attested not anchored not stored refs pending

Feynman's clock, a new variational principle, and parallel-in-time quantum dynamics

Al\'an Aspuru-Guzik, Jarrod R. McClean, John A. Parkhill

arxiv:1301.2326 v2 · 2013-01-10 · quant-ph · physics.chem-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{GJ3YG3CCWGCIQIYIEV3HL56M4S}

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	2026-05-18T02:57:24.142704Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3277836c42b184882308257675f7cce4b21c3cb3717d7c0f6a0cd7b30167af4f

Aliases

arxiv: 1301.2326 · arxiv_version: 1301.2326v2 · doi: 10.48550/arxiv.1301.2326 · pith_short_12: GJ3YG3CCWGCI · pith_short_16: GJ3YG3CCWGCIQIYI · pith_short_8: GJ3YG3CC

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/GJ3YG3CCWGCIQIYIEV3HL56M4S \
  | 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: 3277836c42b184882308257675f7cce4b21c3cb3717d7c0f6a0cd7b30167af4f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cc73927bfab2be058f76227d428ffe68e781cdbfa039846901c5f41d5980b5c6",
    "cross_cats_sorted": [
      "physics.chem-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2013-01-10T21:00:02Z",
    "title_canon_sha256": "a1caa9ca80fdb15d79d8ff89ff6b0c128c1d9aae0f829f56489578a2cc7aca89"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.2326",
    "kind": "arxiv",
    "version": 2
  }
}