Pith Number

pith:4YSAHKPK

pith:2025:4YSAHKPKEPSXKAD4WVR4LYVYAT

not attested not anchored not stored refs pending

Indefinite causal order in cavity quantum electrodynamics

L.O. Casta\~nos-Cervantes, Lorenzo M. Procopio, Tim J. Bartley

arxiv:2509.02209 v1 · 2025-09-02 · 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{4YSAHKPKEPSXKAD4WVR4LYVYAT}

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	2026-07-05T12:03:34.078690Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e62403a9ea23e575007cb563c5e2b804e5d033da3d927261957a92566c4689f7

Aliases

arxiv: 2509.02209 · arxiv_version: 2509.02209v1 · doi: 10.48550/arxiv.2509.02209 · pith_short_12: 4YSAHKPKEPSX · pith_short_16: 4YSAHKPKEPSXKAD4 · pith_short_8: 4YSAHKPK

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/4YSAHKPKEPSXKAD4WVR4LYVYAT \
  | 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: e62403a9ea23e575007cb563c5e2b804e5d033da3d927261957a92566c4689f7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "af6fbadedf80ca66d87c4e164ff3fed4afb783839986942d54a4b3b69925e0f9",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2025-09-02T11:27:13Z",
    "title_canon_sha256": "a1cef08a31583871a608a2edb17e7266fa9e3d1d46e1c9b231cabd45e9a78a22"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2509.02209",
    "kind": "arxiv",
    "version": 1
  }
}