Pith Number

pith:OQ24Q27B

pith:2016:OQ24Q27BSFIOYD5XY62RLYP5CD

not attested not anchored not stored refs pending

First Identification of Direct Collapse Black Hole Candidates in the Early Universe in CANDELS/GOODS-S

Andrea Ferrara, Andrea Grazian, Emanuele Giallongo, Fabio Pacucci, Fabrizio Fiore, Simonetta Puccetti

arxiv:1603.08522 v2 · 2016-03-28 · 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{OQ24Q27BSFIOYD5XY62RLYP5CD}

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	2026-05-18T01:17:49.848609Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7435c86be19150ec0fb7c7b515e1fd10c02085447e7302160e1d2b86e209bb88

Aliases

arxiv: 1603.08522 · arxiv_version: 1603.08522v2 · doi: 10.48550/arxiv.1603.08522 · pith_short_12: OQ24Q27BSFIO · pith_short_16: OQ24Q27BSFIOYD5X · pith_short_8: OQ24Q27B

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/OQ24Q27BSFIOYD5XY62RLYP5CD \
  | 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: 7435c86be19150ec0fb7c7b515e1fd10c02085447e7302160e1d2b86e209bb88

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1c9696ab5ef417023edc09ba6250e38bb6f5c0d9ccaaaed2935aa8679cc510e4",
    "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": "2016-03-28T20:00:01Z",
    "title_canon_sha256": "bf5abb5eeb1e97c7b07aaba94270185692dcea2719eaaa6146b79ea41192d774"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1603.08522",
    "kind": "arxiv",
    "version": 2
  }
}