Pith Number

pith:NTARYSYI

pith:2002:NTARYSYIXAWQ5SFTHHUZFVINWU

not attested not anchored not stored refs pending

Observations on the Holographic Duals of 4-D Extremal Black Holes

M. Porrati, S. Ferrara

arxiv:hep-th/0207255 v2 · 2002-07-29 · 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{NTARYSYIXAWQ5SFTHHUZFVINWU}

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	2026-07-04T16:34:50.735164Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6cc11c4b08b82d0ec8b339e992d50db512669954a417f3ea82958cba608cd196

Aliases

arxiv: hep-th/0207255 · arxiv_version: hep-th/0207255v2 · doi: 10.48550/arxiv.hep-th/0207255 · pith_short_12: NTARYSYIXAWQ · pith_short_16: NTARYSYIXAWQ5SFT · pith_short_8: NTARYSYI

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/NTARYSYIXAWQ5SFTHHUZFVINWU \
  | 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: 6cc11c4b08b82d0ec8b339e992d50db512669954a417f3ea82958cba608cd196

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "93d21e9b1e2733c9f191d359149960b58e2087a7fed77ae8caff7f4679c67f27",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "hep-th",
    "submitted_at": "2002-07-29T11:42:36Z",
    "title_canon_sha256": "8bcf5649374827127a44bc51c584f2c653359c76fea23351dab63ca1e4f0a12a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "hep-th/0207255",
    "kind": "arxiv",
    "version": 2
  }
}