Pith Number

pith:DUDQEVSC

pith:2010:DUDQEVSCJCTD56IGMQWNJ6O56V

not attested not anchored not stored refs pending

"Comets" orbiting a black hole

G. Fabbiano, G. Risaliti, G. Torricelli-Ciamponi, J. Reeves, M. Elvis, M. Salvati, P. Pietrini, R. Maiolino, V. Braito

arxiv:1005.3365 v1 · 2010-05-19 · astro-ph.HE · astro-ph.CO · 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{DUDQEVSCJCTD56IGMQWNJ6O56V}

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	2026-05-18T02:07:17.156802Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1d0702564248a63ef906642cd4f9ddf55953ab0aba6ec3b2d55b9f71caba01ab

Aliases

arxiv: 1005.3365 · arxiv_version: 1005.3365v1 · doi: 10.48550/arxiv.1005.3365 · pith_short_12: DUDQEVSCJCTD · pith_short_16: DUDQEVSCJCTD56IG · pith_short_8: DUDQEVSC

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/DUDQEVSCJCTD56IGMQWNJ6O56V \
  | 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: 1d0702564248a63ef906642cd4f9ddf55953ab0aba6ec3b2d55b9f71caba01ab

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2080dc095d6cb40a08da40bb445058c53c7fac47255c18ac77b2c3ae7c1b8a54",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2010-05-19T06:28:48Z",
    "title_canon_sha256": "0017bc69e59daffb597e6864b866a776e60d33eab25cd1c093f3673f1fbef114"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1005.3365",
    "kind": "arxiv",
    "version": 1
  }
}