Pith Number

pith:KQPGBBZX

pith:2001:KQPGBBZXMYSBHEILYNJDLSTI47

not attested not anchored not stored refs pending

Untangling the merger history of massive black holes with LISA

Scott A. Hughes

arxiv:astro-ph/0108483 v1 · 2001-08-30 · astro-ph · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KQPGBBZXMYSBHEILYNJDLSTI47}

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	2026-05-18T04:23:01.291807Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

541e608737662413910bc35235ca68e7d7b3cf9d6bf999c5eaf6e18c5d485460

Aliases

arxiv: astro-ph/0108483 · arxiv_version: astro-ph/0108483v1 · doi: 10.48550/arxiv.astro-ph/0108483 · pith_short_12: KQPGBBZXMYSB · pith_short_16: KQPGBBZXMYSBHEIL · pith_short_8: KQPGBBZX

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/KQPGBBZXMYSBHEILYNJDLSTI47 \
  | 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: 541e608737662413910bc35235ca68e7d7b3cf9d6bf999c5eaf6e18c5d485460

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2909413fd138b6d51cc46676f57af2fe16933187e5fe7ae0b94aee2a45773428",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-08-30T21:17:38Z",
    "title_canon_sha256": "a857a3f6c9f230abe25dea71728f1f850220816144bdab554a24f3cc2a6ee693"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0108483",
    "kind": "arxiv",
    "version": 1
  }
}