Pith Number

pith:BOPVA62L

pith:2020:BOPVA62LGHCTBNL4PYVIVUCCFN

not attested not anchored not stored refs pending

Evolution of black hole shadows from superradiance

Gast\'on Creci, Helvi Witek, Stefan Vandoren

arxiv:2004.05178 v2 · 2020-04-10 · gr-qc · astro-ph.HE · 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{BOPVA62LGHCTBNL4PYVIVUCCFN}

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	2026-07-05T01:15:38.559770Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0b9f507b4b31c530b57c7e2a8ad0422b5a11d911e1b3afed96f1025c2d4ede3c

Aliases

arxiv: 2004.05178 · arxiv_version: 2004.05178v2 · doi: 10.48550/arxiv.2004.05178 · pith_short_12: BOPVA62LGHCT · pith_short_16: BOPVA62LGHCTBNL4 · pith_short_8: BOPVA62L

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/BOPVA62LGHCTBNL4PYVIVUCCFN \
  | 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: 0b9f507b4b31c530b57c7e2a8ad0422b5a11d911e1b3afed96f1025c2d4ede3c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7a3a871257aa078b34004df3879bcb3dc679775e40c0dd0937fdfc9e74833633",
    "cross_cats_sorted": [
      "astro-ph.HE",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2020-04-10T18:00:12Z",
    "title_canon_sha256": "c6551f06a500b75b625eb3057e0be2a87524c1c51b66577540027d3d4b800f68"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.05178",
    "kind": "arxiv",
    "version": 2
  }
}