Pith Number

pith:WAQTO2TF

pith:2018:WAQTO2TFF2KZTQZUPPNABX7LAI

not attested not anchored not stored refs pending

The Role of Black Hole Feedback on Size and Structural Evolution in Massive Galaxies

Ena Choi, Jeremiah P. Ostriker, Michaela Hirschmann, Rachel S. Somerville, Thorsten Naab

arxiv:1809.02143 v1 · 2018-09-06 · 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{WAQTO2TFF2KZTQZUPPNABX7LAI}

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	2026-05-18T00:02:30.878967Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b021376a652e9599c3347bda00dfeb022a48bb695472b15cae3cb2d0f688e7f0

Aliases

arxiv: 1809.02143 · arxiv_version: 1809.02143v1 · doi: 10.48550/arxiv.1809.02143 · pith_short_12: WAQTO2TFF2KZ · pith_short_16: WAQTO2TFF2KZTQZU · pith_short_8: WAQTO2TF

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/WAQTO2TFF2KZTQZUPPNABX7LAI \
  | 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: b021376a652e9599c3347bda00dfeb022a48bb695472b15cae3cb2d0f688e7f0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4ca371df6d9b1408597b16cc2b1746fa280bbea041dc332f16613bd8cd002d26",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-09-06T18:00:04Z",
    "title_canon_sha256": "64e3e41972cd93958ade8c862fc38a5711c45cbdf62be725184c379fba6ee467"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.02143",
    "kind": "arxiv",
    "version": 1
  }
}