Pith Number

pith:475H243Q

pith:2018:475H243QZBYODM434WKRGRYOWX

not attested not anchored not stored refs pending

Do black holes store negative entropy?

Go Kato, Koji Azuma, Sathyawageeswar Subramanian

arxiv:1807.06753 v7 · 2018-07-18 · hep-th · gr-qc · 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{475H243QZBYODM434WKRGRYOWX}

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.

Cited by

1 paper in Pith

Quantum algorithm for estimating Renyi entropies of quantum states

Receipt and verification

First computed	2026-07-05T10:43:32.534762Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e7fa7d7370c870e1b39be59513470eb5d3a9e48ef9e98b853e5670f247d3bb6c

Aliases

arxiv: 1807.06753 · arxiv_version: 1807.06753v7 · doi: 10.48550/arxiv.1807.06753 · pith_short_12: 475H243QZBYO · pith_short_16: 475H243QZBYODM43 · pith_short_8: 475H243Q

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/475H243QZBYODM434WKRGRYOWX \
  | 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: e7fa7d7370c870e1b39be59513470eb5d3a9e48ef9e98b853e5670f247d3bb6c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2708d7d79b9ad23f32e05d139ca05b00aac0c555c104e84e05ffee57c78452c2",
    "cross_cats_sorted": [
      "gr-qc",
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2018-07-18T02:59:36Z",
    "title_canon_sha256": "f6b6621656dfb0d23847f4fe7259beab2fced7b26bd548f4e1bee067f6807f1a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.06753",
    "kind": "arxiv",
    "version": 7
  }
}