Pith Number

pith:HUJ3VVBC

pith:2021:HUJ3VVBC7HKDLIR3COQJKX5H7Y

not attested not anchored not stored refs pending

Inferring work by quantum superposing forward and time-reversal evolutions

Giulia Rubino, Gonzalo Manzano, Juan M. R. Parrondo, Lee A. Rozema, Philip Walther, \v{C}aslav Brukner

arxiv:2107.02201 v2 · 2021-07-05 · 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{HUJ3VVBC7HKDLIR3COQJKX5H7Y}

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	2026-07-05T04:06:43.825436Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3d13bad422f9d435a23b13a0955fa7fe185a76560798f2670d4475e314c132bc

Aliases

arxiv: 2107.02201 · arxiv_version: 2107.02201v2 · doi: 10.48550/arxiv.2107.02201 · pith_short_12: HUJ3VVBC7HKD · pith_short_16: HUJ3VVBC7HKDLIR3 · pith_short_8: HUJ3VVBC

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/HUJ3VVBC7HKDLIR3COQJKX5H7Y \
  | 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: 3d13bad422f9d435a23b13a0955fa7fe185a76560798f2670d4475e314c132bc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ed1659c39aa77b3605b1a69e2b75303c87bcf12e68c6b369691ae1f0d761a92a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2021-07-05T18:06:41Z",
    "title_canon_sha256": "6af71db0a29242a4f3b2b5cbd082284af0ada8e3fca3bf908a5d1ba212a71bac"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2107.02201",
    "kind": "arxiv",
    "version": 2
  }
}