Pith Number

pith:OLU5UF67

pith:2021:OLU5UF67JZRCRCB62SUJYTRC2I

not attested not anchored not stored refs pending

The Search for Binary Supermassive Black Holes Amongst Quasars with Offset Broad Lines Using the Very Long Baseline Array

Jessie Runnoe, Michael Eracleous, Peter Breiding, Sarah Burke-Spolaor, Steinn Sigurdsson, Tamara Bogdanovi\'c, T. Joseph W. Lazio

arxiv:2103.14176 v2 · 2021-03-25 · 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{OLU5UF67JZRCRCB62SUJYTRC2I}

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	2026-07-05T02:51:21.336648Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

72e9da17df4e6228883ed4a89c4e22d216989a561b2485b1c7015bdba28d645a

Aliases

arxiv: 2103.14176 · arxiv_version: 2103.14176v2 · doi: 10.48550/arxiv.2103.14176 · pith_short_12: OLU5UF67JZRC · pith_short_16: OLU5UF67JZRCRCB6 · pith_short_8: OLU5UF67

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/OLU5UF67JZRCRCB62SUJYTRC2I \
  | 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: 72e9da17df4e6228883ed4a89c4e22d216989a561b2485b1c7015bdba28d645a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7943fbafb6d2b81e2486787318a0d7d2445c5716cddefd6b71eeeb09ff8be4d0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-03-25T23:37:10Z",
    "title_canon_sha256": "8279ec6d4b50f2f7bc7097510093a35a0ca529536882e074c7b46e21f1dcaead"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2103.14176",
    "kind": "arxiv",
    "version": 2
  }
}