Pith Number

pith:L3YVOOKI

pith:2010:L3YVOOKIWZDZT2NHB456HFKZTO

not attested not anchored not stored refs pending

VLBI detection of an AGN pair in the binary black hole candidate SDSS J1536+0441

M-A. Perez-Torres, M. Bondi

arxiv:1003.4849 v2 · 2010-03-25 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{L3YVOOKIWZDZT2NHB456HFKZTO}

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	2026-05-18T02:08:23.163280Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5ef1573948b64799e9a70f3be395599baa35d3e5b6a3f4ecadce9ea75ce55b1e

Aliases

arxiv: 1003.4849 · arxiv_version: 1003.4849v2 · doi: 10.48550/arxiv.1003.4849 · pith_short_12: L3YVOOKIWZDZ · pith_short_16: L3YVOOKIWZDZT2NH · pith_short_8: L3YVOOKI

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/L3YVOOKIWZDZT2NHB456HFKZTO \
  | 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: 5ef1573948b64799e9a70f3be395599baa35d3e5b6a3f4ecadce9ea75ce55b1e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2f4420ff080fe26d99b9b7c4e742283bdb8177fd3018fff72184c897d438963f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-03-25T10:40:49Z",
    "title_canon_sha256": "73159a70506cf5a74a396e074084d33f6f9342cead51d48886d79f35a1c968e9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1003.4849",
    "kind": "arxiv",
    "version": 2
  }
}