Pith Number

pith:ZFQG2377

pith:2015:ZFQG2377RD4ZSXWRVPZYNPXDKY

not attested not anchored not stored refs pending

Detecting Direct Collapse Black Holes: making the case for CR7

Bhaskar Agarwal, Erik Zackrisson, Frank C. van den Bosch, Ivo Labbe, Jarrett L. Johnson, Priyamvada Natarajan, Sadegh Khochfar

arxiv:1510.01733 v2 · 2015-10-06 · 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{ZFQG2377RD4ZSXWRVPZYNPXDKY}

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	2026-05-18T01:06:29.103718Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c9606d6fff88f9995ed1abf386bee35608d3c58ab017d48b9e235ca0afbe97a7

Aliases

arxiv: 1510.01733 · arxiv_version: 1510.01733v2 · doi: 10.48550/arxiv.1510.01733 · pith_short_12: ZFQG2377RD4Z · pith_short_16: ZFQG2377RD4ZSXWR · pith_short_8: ZFQG2377

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/ZFQG2377RD4ZSXWRVPZYNPXDKY \
  | 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: c9606d6fff88f9995ed1abf386bee35608d3c58ab017d48b9e235ca0afbe97a7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8f373a574198d004381438dad338f42b0a7ab443a8401b799d64073f34d7c6fe",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-10-06T20:03:33Z",
    "title_canon_sha256": "de5f0b36cad7e79b9baa6f7dedc19bff4484f1fff465513374c26e145d8a5588"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1510.01733",
    "kind": "arxiv",
    "version": 2
  }
}