Pith Number

pith:TTO7D2AP

pith:2015:TTO7D2APXY6VOIAE5KTPQSXPAX

not attested not anchored not stored refs pending

Gravitational Waves from Direct Collapse Black Holes Formation

Andrea Ferrara, Fabio Pacucci, Stefania Marassi

arxiv:1502.04125 v3 · 2015-02-13 · astro-ph.GA · 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{TTO7D2APXY6VOIAE5KTPQSXPAX}

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	2026-05-18T02:19:00.334629Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9cddf1e80fbe3d572004eaa6f84aef05c34cd894b41655b48dae82cb4daf238d

Aliases

arxiv: 1502.04125 · arxiv_version: 1502.04125v3 · doi: 10.48550/arxiv.1502.04125 · pith_short_12: TTO7D2APXY6V · pith_short_16: TTO7D2APXY6VOIAE · pith_short_8: TTO7D2AP

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/TTO7D2APXY6VOIAE5KTPQSXPAX \
  | 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: 9cddf1e80fbe3d572004eaa6f84aef05c34cd894b41655b48dae82cb4daf238d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a0010bffcf6d8679dc510b14085152bd8b8097e24728fc58b829eeb274d6a611",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-02-13T21:00:04Z",
    "title_canon_sha256": "afba73e40446a0033ebf30fedc174c615a5426024bb34ffeb8040b05f66979d1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.04125",
    "kind": "arxiv",
    "version": 3
  }
}