Pith Number

pith:CWTJZZKV

pith:2021:CWTJZZKVTD6OM52K7CTFLALIUW

not attested not anchored not stored refs pending

Host galaxies of high-redshift quasars: supermassive black hole growth and feedback

Andrea Ferrara, Milena Valentini, Simona Gallerani

arxiv:2107.05638 v1 · 2021-07-12 · astro-ph.GA · 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{CWTJZZKVTD6OM52K7CTFLALIUW}

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.

Cited by

1 paper in Pith

Red, hot, and very metal poor: extreme properties of a massive accreting black hole in the first 500 Myr

Receipt and verification

First computed	2026-07-05T03:05:34.449311Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

15a69ce55598fce6774af8a6558168a5a6e62033c536df1dbff927f5615e790c

Aliases

arxiv: 2107.05638 · arxiv_version: 2107.05638v1 · doi: 10.48550/arxiv.2107.05638 · pith_short_12: CWTJZZKVTD6O · pith_short_16: CWTJZZKVTD6OM52K · pith_short_8: CWTJZZKV

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/CWTJZZKVTD6OM52K7CTFLALIUW \
  | 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: 15a69ce55598fce6774af8a6558168a5a6e62033c536df1dbff927f5615e790c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cd40433596981373cd78f5a2d3ecb8408caeb26da0d07f61c2f576b2318fa12f",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-07-12T18:00:01Z",
    "title_canon_sha256": "cbcfd6bf0a35f4e8c3e79a55d2835d4003b23f4597eeade9a4f658719fc658c2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2107.05638",
    "kind": "arxiv",
    "version": 1
  }
}