Pith Number

pith:3VDZSU3U

pith:2007:3VDZSU3U6R6SZ6LE6SMQG7RMDD

not attested not anchored not stored refs pending

The mass function of high redshift seed black holes

2), 4) ((1) Department of Physics, Astronomy, Cambridge (3) Department of Astronomy, Giuseppe Lodato (1, Priyamvada Natarajan (3, University of Leicester (2) Institute of Astronomy, Yale University), Yale University (4) Department of Physics

arxiv:astro-ph/0702340 v1 · 2007-02-13 · 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{3VDZSU3U6R6SZ6LE6SMQG7RMDD}

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

Direct Collapse Black Hole Candidates from Decaying Dark Matter

Receipt and verification

First computed	2026-07-04T15:16:34.989084Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dd47995374f47d2cf964f499037e2c18f54b984d471f2462c9d81c81b3699f52

Aliases

arxiv: astro-ph/0702340 · arxiv_version: astro-ph/0702340v1 · doi: 10.48550/arxiv.astro-ph/0702340 · pith_short_12: 3VDZSU3U6R6S · pith_short_16: 3VDZSU3U6R6SZ6LE · pith_short_8: 3VDZSU3U

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/3VDZSU3U6R6SZ6LE6SMQG7RMDD \
  | 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: dd47995374f47d2cf964f499037e2c18f54b984d471f2462c9d81c81b3699f52

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d05b1fffcc5194242f847e01206319f965bf145c863369e8eac067ec6710fcaf",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-02-13T15:44:09Z",
    "title_canon_sha256": "09936b5395b159eaa39b6bf7d00f29a2839503b57e47068ee1f0a71e0c905f1f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0702340",
    "kind": "arxiv",
    "version": 1
  }
}