Pith Number

pith:Q7I57QF7

pith:2014:Q7I57QF7LI2SC5TLOI7ZRJT7PT

not attested not anchored not stored refs pending

Cosmic background radiation in the vicinity of a Schwarzschild black hole: no classic firewall

Frederic H. Vincent, George F. R. Ellis, Maciek Wielgus, Marek A. Abramowicz

arxiv:1406.6551 v3 · 2014-06-25 · 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{Q7I57QF7LI2SC5TLOI7ZRJT7PT}

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	2026-05-18T02:31:20.995079Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

87d1dfc0bf5a3521766b723f98a67f7cf342961dfaaabcf2690a3c88ac13237f

Aliases

arxiv: 1406.6551 · arxiv_version: 1406.6551v3 · doi: 10.48550/arxiv.1406.6551 · pith_short_12: Q7I57QF7LI2S · pith_short_16: Q7I57QF7LI2SC5TL · pith_short_8: Q7I57QF7

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/Q7I57QF7LI2SC5TLOI7ZRJT7PT \
  | 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: 87d1dfc0bf5a3521766b723f98a67f7cf342961dfaaabcf2690a3c88ac13237f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0ad387dec0628f9b7f8979017cb6a1053f4cbeed678776cbdb8b0195a81de792",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2014-06-25T12:53:01Z",
    "title_canon_sha256": "df66b596cfbb29f7ec0c8317a3f37d274b1f1283be56371016043d53e09a85dc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1406.6551",
    "kind": "arxiv",
    "version": 3
  }
}