Pith Number

pith:S4QKGRRW

pith:2015:S4QKGRRWAMIPHGGXYOV2TM5W4Q

not attested not anchored not stored refs pending

Operational formulation of time reversal in quantum theory

Nicolas J. Cerf, Ognyan Oreshkov

arxiv:1507.07745 v2 · 2015-07-28 · quant-ph · gr-qc · 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{S4QKGRRWAMIPHGGXYOV2TM5W4Q}

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	2026-05-18T01:10:18.358677Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9720a346360310f398d7c3aba9b3b6e408dfd5b90c35011b74295ea43b66d827

Aliases

arxiv: 1507.07745 · arxiv_version: 1507.07745v2 · doi: 10.48550/arxiv.1507.07745 · pith_short_12: S4QKGRRWAMIP · pith_short_16: S4QKGRRWAMIPHGGX · pith_short_8: S4QKGRRW

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/S4QKGRRWAMIPHGGXYOV2TM5W4Q \
  | 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: 9720a346360310f398d7c3aba9b3b6e408dfd5b90c35011b74295ea43b66d827

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5700bd235d6e23b2fde080363b436bd741a48aeca49c2d6c8ae8aa9d88028977",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2015-07-28T12:53:51Z",
    "title_canon_sha256": "b37c3fe8c364cfb3ad2ec348dd4622ede11b670ae32e914e72c7d4f9b1866dc2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.07745",
    "kind": "arxiv",
    "version": 2
  }
}