Pith Number

pith:DALXB2YE

pith:2005:DALXB2YE7F4AJUY6UORSNZID5J

not attested not anchored not stored refs pending

Observing the Seyfert 2 nucleus of NGC 1068 with the VLT Interferometer

Andrea Richichi, Christoph Leinert, Helen Sol, Huub Rottgering, Klaus Meisenheimer, Markus Wittkowski, Walter Jaffe

arxiv:astro-ph/0507236 v1 · 2005-07-10 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DALXB2YE7F4AJUY6UORSNZID5J}

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	2026-05-18T01:40:33.824244Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

181770eb04f97804d31ea3a326e503ea60068602e5c787bfbe1dd0d12635578c

Aliases

arxiv: astro-ph/0507236 · arxiv_version: astro-ph/0507236v1 · doi: 10.48550/arxiv.astro-ph/0507236 · pith_short_12: DALXB2YE7F4A · pith_short_16: DALXB2YE7F4AJUY6 · pith_short_8: DALXB2YE

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/DALXB2YE7F4AJUY6UORSNZID5J \
  | 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: 181770eb04f97804d31ea3a326e503ea60068602e5c787bfbe1dd0d12635578c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "21a668796784495ba6ae09d8395494504022bca5ff1aebada03d791aa3c9cb7d",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-07-10T18:38:57Z",
    "title_canon_sha256": "0de64331922433521cae3d794350e314f339eefd6efc8c33ba804959f9abf979"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0507236",
    "kind": "arxiv",
    "version": 1
  }
}