Pith Number

pith:PUDS5IC4

pith:2022:PUDS5IC4CC4U5LFAHNUYCHQCK2

not attested not anchored not stored refs pending

Do we live in a [quantum] simulation? Constraints, observations, and experiments on the simulation hypothesis

Anders Indset, Florian Neukart, Markus Pflitsch, Michael Perelshtein

arxiv:2212.04921 v2 · 2022-12-07 · quant-ph · cs.CY · cs.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PUDS5IC4CC4U5LFAHNUYCHQCK2}

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	2026-07-05T05:24:46.478248Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7d072ea05c10b94eaca03b69811e025686099ed02f75c59dd8de77e4bd2286a8

Aliases

arxiv: 2212.04921 · arxiv_version: 2212.04921v2 · doi: 10.48550/arxiv.2212.04921 · pith_short_12: PUDS5IC4CC4U · pith_short_16: PUDS5IC4CC4U5LFA · pith_short_8: PUDS5IC4

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/PUDS5IC4CC4U5LFAHNUYCHQCK2 \
  | 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: 7d072ea05c10b94eaca03b69811e025686099ed02f75c59dd8de77e4bd2286a8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2ba161671f9e2c2d044ac74f2d748724de124bbfdfe38d312e56c3d4ea692767",
    "cross_cats_sorted": [
      "cs.CY",
      "cs.LO"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2022-12-07T23:04:39Z",
    "title_canon_sha256": "3ccf5319a98b57f885a9fdf0fa7d98dbac972b8877351716aee7ba28e85d9050"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2212.04921",
    "kind": "arxiv",
    "version": 2
  }
}