Pith Number

pith:HCDTFLBQ

pith:2007:HCDTFLBQRGNT42H7L3WKMRKDTX

not attested not anchored not stored refs pending

Stretched Horizon and Entropy of Superstars

Luca D'Errico, Roberto Pettorino, Wolfgang Mueck

arxiv:hep-th/0703223 v2 · 2007-03-26 · 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{HCDTFLBQRGNT42H7L3WKMRKDTX}

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	2026-05-18T04:38:37.703207Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

388732ac30899b3e68ff5eeca645439de81f58106d06cf42bf20711db2373b02

Aliases

arxiv: hep-th/0703223 · arxiv_version: hep-th/0703223v2 · doi: 10.48550/arxiv.hep-th/0703223 · pith_short_12: HCDTFLBQRGNT · pith_short_16: HCDTFLBQRGNT42H7 · pith_short_8: HCDTFLBQ

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/HCDTFLBQRGNT42H7L3WKMRKDTX \
  | 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: 388732ac30899b3e68ff5eeca645439de81f58106d06cf42bf20711db2373b02

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "60cebb6fe300a6e590b77b2b4577f3c7a930f385330a0623fdb4448c78967f21",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "hep-th",
    "submitted_at": "2007-03-26T09:39:33Z",
    "title_canon_sha256": "bf6df7f765d4f2c1a7fd48a692fd629f7c9ea20b13ed76acb57d4d85b75488bf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "hep-th/0703223",
    "kind": "arxiv",
    "version": 2
  }
}