Pith Number

pith:T4QMLJ3L

pith:2015:T4QMLJ3LSKQ7CLKHLTLVBX4K35

not attested not anchored not stored refs pending

Do the Most Massive Black Holes at $z=2$ Grow via Major Mergers?

A. M. Koekemoer, A. Schulze, A. van der Wel, C. Villforth, J. D. Silverman, K. Jahnke, L. Wisotzki, M. Cisternas, M. Mechtley, M. Schramm, R. Andrae, R. A. Windhorst, S. H. Cohen, T. Hewlett

arxiv:1510.08461 v2 · 2015-10-28 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{T4QMLJ3LSKQ7CLKHLTLVBX4K35}

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	2026-05-18T01:01:42.245437Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9f20c5a76b92a1f12d475cd750df8adf49a44b0364040d58efb500e8cacbd774

Aliases

arxiv: 1510.08461 · arxiv_version: 1510.08461v2 · doi: 10.48550/arxiv.1510.08461 · pith_short_12: T4QMLJ3LSKQ7 · pith_short_16: T4QMLJ3LSKQ7CLKH · pith_short_8: T4QMLJ3L

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/T4QMLJ3LSKQ7CLKHLTLVBX4K35 \
  | 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: 9f20c5a76b92a1f12d475cd750df8adf49a44b0364040d58efb500e8cacbd774

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8a7c2191f20c278fb979e5e84f13486aa4c90b6edc2bc80c7a05482a0f416f66",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-10-28T20:08:38Z",
    "title_canon_sha256": "21dff1dfc0c6115e4bd1fc33b9ebe725fc421fd7128ee34e47a08209144b6ab8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1510.08461",
    "kind": "arxiv",
    "version": 2
  }
}