Pith Number

pith:Q6QY7LO4

pith:2010:Q6QY7LO4NVLFFS3IL5U6AFTF33

not attested not anchored not stored refs pending

Black-Hole Mass and Growth Rate at z~4.8: A Short Episode of Fast Growth Followed by Short Duty Cycle Activity

Benny Trakhtenbrot, Hagai Netzer, Ohad Shemmer, Paulina Lira

arxiv:1012.1871 v2 · 2010-12-08 · 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{Q6QY7LO4NVLFFS3IL5U6AFTF33}

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	2026-05-18T02:04:31.399594Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

87a18faddc6d5652cb685f69e01665decd37f25340a50e54f7682a9a21f711ad

Aliases

arxiv: 1012.1871 · arxiv_version: 1012.1871v2 · doi: 10.48550/arxiv.1012.1871 · pith_short_12: Q6QY7LO4NVLF · pith_short_16: Q6QY7LO4NVLFFS3I · pith_short_8: Q6QY7LO4

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/Q6QY7LO4NVLFFS3IL5U6AFTF33 \
  | 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: 87a18faddc6d5652cb685f69e01665decd37f25340a50e54f7682a9a21f711ad

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6fc06c72711fb245e72d5dbb2a0547d3e12f19aa66edcf204dfe81c6a9a13c3b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-12-08T21:11:21Z",
    "title_canon_sha256": "cfb90385d097b34e4a247ee02cf562f770dd254e0a2f71fede8297f00728ed60"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1012.1871",
    "kind": "arxiv",
    "version": 2
  }
}