Pith Number

pith:EV34NQAQ

pith:2000:EV34NQAQ5VWE4MDATQBLWIZ3KS

not attested not anchored not stored refs pending

Star Formation-Regulated Growth of Black Holes in Protogalactic Spheroids

Andreas Burkert (MPIA, Heidelberg), Joseph Silk (Univ. of Oxford)

arxiv:astro-ph/0011511 v1 · 2000-11-28 · astro-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EV34NQAQ5VWE4MDATQBLWIZ3KS}

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	2026-05-18T01:07:46.244844Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2577c6c010ed6c4e30609c02bb233b54b240a6cd29f1a4fccc3584c00ee4431b

Aliases

arxiv: astro-ph/0011511 · arxiv_version: astro-ph/0011511v1 · doi: 10.48550/arxiv.astro-ph/0011511 · pith_short_12: EV34NQAQ5VWE · pith_short_16: EV34NQAQ5VWE4MDA · pith_short_8: EV34NQAQ

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/EV34NQAQ5VWE4MDATQBLWIZ3KS \
  | 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: 2577c6c010ed6c4e30609c02bb233b54b240a6cd29f1a4fccc3584c00ee4431b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b2dd5bc30b1ceed6ec5e6a6dfd683b47b92d6e9381d9e6d594920ece2bf77e34",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-11-28T09:19:09Z",
    "title_canon_sha256": "9392e73e8edcf1a155bbd4658546fe7d7dc5f25e381a46065af1519804425097"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0011511",
    "kind": "arxiv",
    "version": 1
  }
}