Pith Number

pith:4VGJZ6N7

pith:2017:4VGJZ6N7XV2LREUCYRLO2ZTRWQ

not attested not anchored not stored refs pending

Feedback Limits to Maximum Seed Masses of Black Holes

Andrea Ferrara, Fabio Pacucci, Priyamvada Natarajan

arxiv:1701.06565 v3 · 2017-01-23 · 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{4VGJZ6N7XV2LREUCYRLO2ZTRWQ}

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	2026-05-18T00:50:37.360859Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e54c9cf9bfbd74b89282c456ed6671b4161e29b92a6c4797df1962033b797d58

Aliases

arxiv: 1701.06565 · arxiv_version: 1701.06565v3 · doi: 10.48550/arxiv.1701.06565 · pith_short_12: 4VGJZ6N7XV2L · pith_short_16: 4VGJZ6N7XV2LREUC · pith_short_8: 4VGJZ6N7

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/4VGJZ6N7XV2LREUCYRLO2ZTRWQ \
  | 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: e54c9cf9bfbd74b89282c456ed6671b4161e29b92a6c4797df1962033b797d58

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "157dbfeea3708b711c5981015d356dd056ad09e6a58ae45921e19956a3e9b8a5",
    "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": "2017-01-23T19:00:00Z",
    "title_canon_sha256": "0057879d21735ad7c046aa9745b57bb913baeb7dd413609300353a224bf18f73"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1701.06565",
    "kind": "arxiv",
    "version": 3
  }
}