Pith Number

pith:VKYMNBJJ

pith:2018:VKYMNBJJ7QLRED6LU4NOZEZFAR

not attested not anchored not stored refs pending

The spectrum of perturbations inside the Schwarzschild black hole

Hassan Firouzjahi

arxiv:1805.11289 v1 · 2018-05-29 · gr-qc · astro-ph.CO · 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{VKYMNBJJ7QLRED6LU4NOZEZFAR}

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	2026-05-18T00:14:37.324976Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aab0c68529fc17120fcba71aec9325046b95eace60ada6e0a80f47a2089daa81

Aliases

arxiv: 1805.11289 · arxiv_version: 1805.11289v1 · doi: 10.48550/arxiv.1805.11289 · pith_short_12: VKYMNBJJ7QLR · pith_short_16: VKYMNBJJ7QLRED6L · pith_short_8: VKYMNBJJ

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/VKYMNBJJ7QLRED6LU4NOZEZFAR \
  | 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: aab0c68529fc17120fcba71aec9325046b95eace60ada6e0a80f47a2089daa81

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1410ea3462d4232867daba66f93e98452c8d6b6ff812f322d8085e60ee64666d",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2018-05-29T08:04:15Z",
    "title_canon_sha256": "189800a71316dbfdef29469defa06a5a909c91d2ed4b7d12c721042527f0c767"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.11289",
    "kind": "arxiv",
    "version": 1
  }
}