Pith Number

pith:WK2TWOE7

pith:2019:WK2TWOE7X27DJOHB6PBMKIIIP5

not attested not anchored not stored refs pending

Detecting the Birth of Supermassive Black Holes Formed from Heavy Seeds

Alexey Vikhlinin, Andrea Ferrara, Fabio Pacucci, Feryal Ozel, Grant R. Tremblay, Marta Volonteri, Megan C. Urry, Nico Cappelluti, Priyamvada Natarajan, Raffaella Schneider, Rosa Valiante, Vivienne Baldassare, Xiaohui Fan, Zoltan Haiman

arxiv:1903.07623 v1 · 2019-03-18 · astro-ph.GA · astro-ph.CO · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WK2TWOE7X27DJOHB6PBMKIIIP5}

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.

Cited by

2 papers in Pith

Unveiling the Gravitational Universe at \mu-Hz Frequencies

Direct Collapse Black Hole Candidates from Decaying Dark Matter

Receipt and verification

First computed	2026-05-17T23:50:54.586171Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b2b53b389fbebe34b8e1f3c2c521087f7acec5a5c4b1cc29693b90c26095ae04

Aliases

arxiv: 1903.07623 · arxiv_version: 1903.07623v1 · doi: 10.48550/arxiv.1903.07623 · pith_short_12: WK2TWOE7X27D · pith_short_16: WK2TWOE7X27DJOHB · pith_short_8: WK2TWOE7

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/WK2TWOE7X27DJOHB6PBMKIIIP5 \
  | 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: b2b53b389fbebe34b8e1f3c2c521087f7acec5a5c4b1cc29693b90c26095ae04

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "83746124ef3f1a4091fa9f36fc7a6e364b9004a0b9a11111cbfdbe45b7c56b90",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-03-18T18:00:01Z",
    "title_canon_sha256": "0db1418d69931ca353330f1879ecdb95f469ffa8a7fc0ad1420d005a93024028"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.07623",
    "kind": "arxiv",
    "version": 1
  }
}