Pith Number

pith:NC6KURN4

pith:2013:NC6KURN4PIN5RG7ESK37723FYC

not attested not anchored not stored refs pending

Factorization of unitarity and black hole firewalls

Stephen D.H. Hsu

arxiv:1308.5686 v2 · 2013-08-26 · 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{NC6KURN4PIN5RG7ESK37723FYC}

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	2026-05-18T03:07:56.483195Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

68bcaa45bc7a1bd89be492b7ffeb65c0b4a34511d12bd4ae707b99866e24ccb0

Aliases

arxiv: 1308.5686 · arxiv_version: 1308.5686v2 · doi: 10.48550/arxiv.1308.5686 · pith_short_12: NC6KURN4PIN5 · pith_short_16: NC6KURN4PIN5RG7E · pith_short_8: NC6KURN4

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/NC6KURN4PIN5RG7ESK37723FYC \
  | 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: 68bcaa45bc7a1bd89be492b7ffeb65c0b4a34511d12bd4ae707b99866e24ccb0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "69bd7925ba2b8bbdb033ed88c8cb3fbeaa4ad333a8fa8d284cf5c0a42b2569ac",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2013-08-26T20:00:55Z",
    "title_canon_sha256": "db5dd97ab0ce34dafdb96477be3338c15a528cd5b3ea95913e818589f724668c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.5686",
    "kind": "arxiv",
    "version": 2
  }
}