Pith Number

pith:H7SDOVWI

pith:2019:H7SDOVWIYA2XTCWJ7YRVO3CKR5

not attested not anchored not stored refs pending

The Impact of metallicity evolution of the universe on the maximum mass of LIGO binary black holes

Mohammadtaher Safarzadeh, Will M. Farr

arxiv:1909.01356 v1 · 2019-09-03 · astro-ph.HE · 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{H7SDOVWIYA2XTCWJ7YRVO3CKR5}

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	2026-07-05T00:08:38.851534Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3fe43756c8c035798ac9fe23576c4a8f4d3eec07298b385f133c23d76aa47e6d

Aliases

arxiv: 1909.01356 · arxiv_version: 1909.01356v1 · doi: 10.48550/arxiv.1909.01356 · pith_short_12: H7SDOVWIYA2X · pith_short_16: H7SDOVWIYA2XTCWJ · pith_short_8: H7SDOVWI

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/H7SDOVWIYA2XTCWJ7YRVO3CKR5 \
  | 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: 3fe43756c8c035798ac9fe23576c4a8f4d3eec07298b385f133c23d76aa47e6d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ce4e354b7a00ccdd25c3a52a20bf0042a600e8cf5c80bf4ef35ec2842abf41db",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2019-09-03T18:00:01Z",
    "title_canon_sha256": "062f5d462ca0402c29e7f587ae8e41d55f662b2286a32dce21edcfff8e546fa6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1909.01356",
    "kind": "arxiv",
    "version": 1
  }
}