Pith Number

pith:ZT6EANFR

pith:2011:ZT6EANFRFQBN2BTWEKFCWNFZH2

not attested not anchored not stored refs pending

Supermassive Black Hole Growth in Starburst Galaxies over Cosmic Time: Constraints from the Deepest Chandra Fields

B. D. Lehmer, B. Luo, C. Papovich, D. A. Rafferty, D. M. Alexander, F. E. Bauer, W. N. Brandt, Y. Q. Xue

arxiv:1108.3229 v1 · 2011-08-16 · 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{ZT6EANFRFQBN2BTWEKFCWNFZH2}

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	2026-05-18T02:00:53.287917Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ccfc4034b12c02dd0676228a2b34b93eac083f280f905de0898a9ecb9bd52adb

Aliases

arxiv: 1108.3229 · arxiv_version: 1108.3229v1 · doi: 10.48550/arxiv.1108.3229 · pith_short_12: ZT6EANFRFQBN · pith_short_16: ZT6EANFRFQBN2BTW · pith_short_8: ZT6EANFR

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/ZT6EANFRFQBN2BTWEKFCWNFZH2 \
  | 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: ccfc4034b12c02dd0676228a2b34b93eac083f280f905de0898a9ecb9bd52adb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "50e2239114a7049c2738b72bf97b14f7022d2555bc2069f34171b44b91d34539",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-08-16T12:55:42Z",
    "title_canon_sha256": "03da6f3b165659c11aaf6899ddfff4d36ae55b29a0de157d0f8e519c2c4c27c4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.3229",
    "kind": "arxiv",
    "version": 1
  }
}