Pith Number

pith:M4UOHLHT

pith:2015:M4UOHLHTDU2ZX7W52ZPU7MNX7Y

not attested not anchored not stored refs pending

Entropy of the Information Retrieved from Black Holes

Laura Mersini-Houghton

arxiv:1511.04795 v1 · 2015-11-16 · hep-th · gr-qc · hep-ph · 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{M4UOHLHTDU2ZX7W52ZPU7MNX7Y}

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	2026-05-18T01:12:30.461922Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6728e3acf31d359bfeddd65f4fb1b7fe1ef51a48843fc1cdf9de3b3a5bdd807f

Aliases

arxiv: 1511.04795 · arxiv_version: 1511.04795v1 · doi: 10.48550/arxiv.1511.04795 · pith_short_12: M4UOHLHTDU2Z · pith_short_16: M4UOHLHTDU2ZX7W5 · pith_short_8: M4UOHLHT

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/M4UOHLHTDU2ZX7W52ZPU7MNX7Y \
  | 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: 6728e3acf31d359bfeddd65f4fb1b7fe1ef51a48843fc1cdf9de3b3a5bdd807f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e9b97fd850884cd778838f73247c7fa83f43bda02bf4d4e7c2edbef97f18eb81",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-ph",
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2015-11-16T01:18:37Z",
    "title_canon_sha256": "66ceef6b102ebbf73a8b1306d310daa030008cffe355fd405a3414f68665abd0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1511.04795",
    "kind": "arxiv",
    "version": 1
  }
}