Pith Number

pith:RAYYCJKK

pith:2026:RAYYCJKKVVKYEQ52E4M2JOZ423

not attested not anchored not stored refs pending

Directly tracking the re-brightening of a supermassive black hole accretion disk

A. Maselli, A. Trindade Falc\~ao, C. Done, D. {\L}. Kr\'ol, E. Lusso, E. Nardini, E. Piconcelli, F. Vagnetti, G. Matzeu, G. Risaliti, J. V. Hern\'andez Santisteban, K. Horne, M. Perri, R. Middei, S. Bianchi

arxiv:2605.18958 v1 · 2026-05-18 · astro-ph.HE · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RAYYCJKKVVKYEQ52E4M2JOZ423}

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	2026-05-20T00:06:38.684842Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

883181254aad558243ba2719a4bb3cd6e62768f982de31ecf7d3b32d76538744

Aliases

arxiv: 2605.18958 · arxiv_version: 2605.18958v1 · doi: 10.48550/arxiv.2605.18958 · pith_short_12: RAYYCJKKVVKY · pith_short_16: RAYYCJKKVVKYEQ52 · pith_short_8: RAYYCJKK

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/RAYYCJKKVVKYEQ52E4M2JOZ423 \
  | 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: 883181254aad558243ba2719a4bb3cd6e62768f982de31ecf7d3b32d76538744

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d7fe772fa5e3ebb9e2752601188a059100e7e9231dfeee63ded8e9a811178843",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2026-05-18T18:00:05Z",
    "title_canon_sha256": "af266df7db277c0ef112ce8c380a7d9c994f08082c9e115f4c34f63c3d1da799"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.18958",
    "kind": "arxiv",
    "version": 1
  }
}