Pith Number

pith:K7H4YNJZ

pith:1997:K7H4YNJZZVFR44EVH242O25YJE

not attested not anchored not stored refs pending

Duality, Central Charges and Entropy of Extremal BPS Black Holes

L. Andrianopoli, R. D'Auria, S. Ferrara

arxiv:hep-th/9709113 v1 · 1997-09-16 · 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{K7H4YNJZZVFR44EVH242O25YJE}

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	2026-07-04T16:05:43.002925Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

57cfcc3539cd4b1e70953eb9a76bb8492a0c24d878da63361dee91bf195d22f0

Aliases

arxiv: hep-th/9709113 · arxiv_version: hep-th/9709113v1 · doi: 10.48550/arxiv.hep-th/9709113 · pith_short_12: K7H4YNJZZVFR · pith_short_16: K7H4YNJZZVFR44EV · pith_short_8: K7H4YNJZ

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/K7H4YNJZZVFR44EVH242O25YJE \
  | 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: 57cfcc3539cd4b1e70953eb9a76bb8492a0c24d878da63361dee91bf195d22f0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dc35b7da289b3f9927b956070230573223a2a921752c576a68bacb5bcc66ecff",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "hep-th",
    "submitted_at": "1997-09-16T18:04:55Z",
    "title_canon_sha256": "6dc69c70d21507378c9b3af07cf2abad4155a39624c2ac6b9f8ed8a41a9eb54d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "hep-th/9709113",
    "kind": "arxiv",
    "version": 1
  }
}