Pith Number

pith:3UNZZI6D

pith:2012:3UNZZI6DL33WB67TT64ITOSTSQ

not attested not anchored not stored refs pending

Entropy of Quantum Black Holes

Romesh K. Kaul

arxiv:1201.6102 v2 · 2012-01-30 · 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{3UNZZI6DL33WB67TT64ITOSTSQ}

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	2026-05-18T04:02:52.227697Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dd1b9ca3c35ef760fbf39fb889ba5394371734573b7e67cf1105cc31ee58b62d

Aliases

arxiv: 1201.6102 · arxiv_version: 1201.6102v2 · doi: 10.48550/arxiv.1201.6102 · pith_short_12: 3UNZZI6DL33W · pith_short_16: 3UNZZI6DL33WB67T · pith_short_8: 3UNZZI6D

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/3UNZZI6DL33WB67TT64ITOSTSQ \
  | 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: dd1b9ca3c35ef760fbf39fb889ba5394371734573b7e67cf1105cc31ee58b62d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5445fc0c426973a3075fc79284b598a960822255bbfa497490fb173c3099244b",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/3.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2012-01-30T03:47:05Z",
    "title_canon_sha256": "714a5629650ee48d8a494640c8ee7a1fa8be78ee17edb2d28f1fee5a883a9ca0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.6102",
    "kind": "arxiv",
    "version": 2
  }
}