Pith Number

pith:ORYBHRA5

pith:2010:ORYBHRA5PTQTQTEYO4VVRKZIQB

not attested not anchored not stored refs pending

Black hole formation in primordial galaxies: chemical and radiative conditions

Dominik R. G. Schleicher, Marco Spaans, Simon C. O. Glover

arxiv:1002.2850 v1 · 2010-02-15 · 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{ORYBHRA5PTQTQTEYO4VVRKZIQB}

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	2026-05-18T02:09:08.302480Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

747013c41d7ce1384c98772b58ab28804cc0dbad7b384e4a4c96091e52b34746

Aliases

arxiv: 1002.2850 · arxiv_version: 1002.2850v1 · doi: 10.48550/arxiv.1002.2850 · pith_short_12: ORYBHRA5PTQT · pith_short_16: ORYBHRA5PTQTQTEY · pith_short_8: ORYBHRA5

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/ORYBHRA5PTQTQTEYO4VVRKZIQB \
  | 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: 747013c41d7ce1384c98772b58ab28804cc0dbad7b384e4a4c96091e52b34746

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "06efe22045220a56802aeed06514ac9e99e74db87032a7071162304f3fa6c03b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-02-15T11:03:17Z",
    "title_canon_sha256": "5e91eb28bfdf4391daf99120e3bcb6965ec7c976dc9cc926cd1b198658e92845"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1002.2850",
    "kind": "arxiv",
    "version": 1
  }
}