Pith Number

pith:7P6UTSCH

pith:2013:7P6UTSCH4HU62SQMEJLFVAJVTN

not attested not anchored not stored refs pending

Work extraction and thermodynamics for individual quantum systems

Anthony J. Short, Paul Skrzypczyk, Sandu Popescu

arxiv:1307.1558 v2 · 2013-07-05 · 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{7P6UTSCH4HU62SQMEJLFVAJVTN}

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	2026-05-18T02:41:58.385613Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fbfd49c847e1e9ed4a0c22565a81359b4b449e25fa1554d48bc0e155b87b2c71

Aliases

arxiv: 1307.1558 · arxiv_version: 1307.1558v2 · doi: 10.48550/arxiv.1307.1558 · pith_short_12: 7P6UTSCH4HU6 · pith_short_16: 7P6UTSCH4HU62SQM · pith_short_8: 7P6UTSCH

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/7P6UTSCH4HU62SQMEJLFVAJVTN \
  | 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: fbfd49c847e1e9ed4a0c22565a81359b4b449e25fa1554d48bc0e155b87b2c71

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "afffcf8855da55b245b2a15079e348f6a35a046606f7ca6ae170ed22d8671ad2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2013-07-05T09:17:40Z",
    "title_canon_sha256": "bafea67139fbfc0da5a258305a0a5099853cec2b83b85293c6e67736cb32733d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.1558",
    "kind": "arxiv",
    "version": 2
  }
}