Pith Number

pith:PPYGITJA

pith:2018:PPYGITJAL3GSYXGLMWXYKOL5XU

not attested not anchored not stored refs pending

Growth problems of stellar black holes in early galaxies

Andrea Ferrara, Maria Carmela Orofino, Simona Gallerani

arxiv:1807.05760 v1 · 2018-07-16 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PPYGITJAL3GSYXGLMWXYKOL5XU}

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	2026-05-17T23:57:40.807487Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7bf0644d205ecd2c5ccb65af85397dbd16384ba37a10691b2a0d86dba22ca0d8

Aliases

arxiv: 1807.05760 · arxiv_version: 1807.05760v1 · doi: 10.48550/arxiv.1807.05760 · pith_short_12: PPYGITJAL3GS · pith_short_16: PPYGITJAL3GSYXGL · pith_short_8: PPYGITJA

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/PPYGITJAL3GSYXGLMWXYKOL5XU \
  | 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: 7bf0644d205ecd2c5ccb65af85397dbd16384ba37a10691b2a0d86dba22ca0d8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c075bfa32dbcda450dd9061a98f4279a7ebd8482c8ac30cbd42086c4cd10d379",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-07-16T09:45:14Z",
    "title_canon_sha256": "d6c0929fda74489eca2f3a46185e2d66e2922ff6e5353e9cd334da0340978093"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.05760",
    "kind": "arxiv",
    "version": 1
  }
}