Pith Number

pith:IQRH4GQZ

pith:2023:IQRH4GQZK4AZQHOZKO6QRQQQML

not attested not anchored not stored refs pending

The formation of supermassive black holes from Population III.1 seeds. II. Evolution to the local universe

Jasbir Singh, Jonathan C. Tan, Pierluigi Monaco

arxiv:2301.11464 v2 · 2023-01-26 · 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{IQRH4GQZK4AZQHOZKO6QRQQQML}

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	2026-07-05T06:41:37.025511Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

44227e1a195701981dd953bd08c21062ceb5c9fd91b972be028773a38ce5e82d

Aliases

arxiv: 2301.11464 · arxiv_version: 2301.11464v2 · doi: 10.48550/arxiv.2301.11464 · pith_short_12: IQRH4GQZK4AZ · pith_short_16: IQRH4GQZK4AZQHOZ · pith_short_8: IQRH4GQZ

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/IQRH4GQZK4AZQHOZKO6QRQQQML \
  | 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: 44227e1a195701981dd953bd08c21062ceb5c9fd91b972be028773a38ce5e82d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ffa66bb4439daf3f1e596d14e911431bf8c3973e527adb3e8a6ca51d55e07764",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2023-01-26T23:35:41Z",
    "title_canon_sha256": "6aa17fa0d36501b0bf96380ff0921e717b450dfeccacef44de77601e575b72d1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2301.11464",
    "kind": "arxiv",
    "version": 2
  }
}