Pith Number

pith:B4QNSYGS

pith:2021:B4QNSYGSBVND3MVGGEHVEQBJ4E

not attested not anchored not stored refs pending

Growth of Massive Black Hole Seeds by Migration of Stellar and Primordial Black Holes: Gravitational Waves and Stochastic Background

Alex Sicilia, Andrea Lapi, Carlo Baccigalupi, Giulia Capurri, Luigi Danese, Lumen Boco

arxiv:2104.07682 v2 · 2021-04-15 · astro-ph.CO · astro-ph.GA · 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{B4QNSYGSBVND3MVGGEHVEQBJ4E}

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	2026-07-05T03:23:40.682673Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0f20d960d20d5a3db2a6310f524029e11ff281c48007bba3d9533473b595f82b

Aliases

arxiv: 2104.07682 · arxiv_version: 2104.07682v2 · doi: 10.48550/arxiv.2104.07682 · pith_short_12: B4QNSYGSBVND · pith_short_16: B4QNSYGSBVND3MVG · pith_short_8: B4QNSYGS

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/B4QNSYGSBVND3MVGGEHVEQBJ4E \
  | 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: 0f20d960d20d5a3db2a6310f524029e11ff281c48007bba3d9533473b595f82b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "11a4e970292fa4ebe8452e316d086164ad7527ebfeadc0c25135594a222b0194",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2021-04-15T18:00:04Z",
    "title_canon_sha256": "02a7c72b4ffbd465f4f762a8a971b1111ad3204852c91855a7aba874bfca31bd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.07682",
    "kind": "arxiv",
    "version": 2
  }
}