Pith Number

pith:VTHPIM7A

pith:2013:VTHPIM7AHAMIVXL3UE3XH7URW3

not attested not anchored not stored refs pending

Black Holes or Firewalls: A Theory of Horizons

Jaime Varela, Sean J. Weinberg, Yasunori Nomura

arxiv:1308.4121 v2 · 2013-08-19 · hep-th · gr-qc

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VTHPIM7AHAMIVXL3UE3XH7URW3}

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	2026-05-18T03:07:22.831152Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

accef433e038188add7ba13773fe91b6c788e22ee11d98e1450e668ab4df8b9a

Aliases

arxiv: 1308.4121 · arxiv_version: 1308.4121v2 · doi: 10.48550/arxiv.1308.4121 · pith_short_12: VTHPIM7AHAMI · pith_short_16: VTHPIM7AHAMIVXL3 · pith_short_8: VTHPIM7A

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/VTHPIM7AHAMIVXL3UE3XH7URW3 \
  | 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: accef433e038188add7ba13773fe91b6c788e22ee11d98e1450e668ab4df8b9a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7af8213a28cc3c47878c6dff098b23c9ef430ceb899ea4c84f87ae38e91842c6",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2013-08-19T19:59:46Z",
    "title_canon_sha256": "4138d6e7c9e2dbf9afcec0d558a75828d4cc26ce4d6c64e9673e94e96414fab0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.4121",
    "kind": "arxiv",
    "version": 2
  }
}