Pith Number

pith:EE63X3HK

pith:2023:EE63X3HKQOMZQ4JMOOOEGCVTNH

not attested not anchored not stored refs pending

The Origins of Gas Accreted by Supermassive Black Holes: the Importance of Recycled Gas

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

arxiv:2312.08449 v2 · 2023-12-13 · 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{EE63X3HKQOMZQ4JMOOOEGCVTNH}

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	2026-07-05T07:46:28.726839Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

213dbbecea839998712c739c430ab369dc15890e55fe293fcafd533464e66442

Aliases

arxiv: 2312.08449 · arxiv_version: 2312.08449v2 · doi: 10.48550/arxiv.2312.08449 · pith_short_12: EE63X3HKQOMZ · pith_short_16: EE63X3HKQOMZQ4JM · pith_short_8: EE63X3HK

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/EE63X3HKQOMZQ4JMOOOEGCVTNH \
  | 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: 213dbbecea839998712c739c430ab369dc15890e55fe293fcafd533464e66442

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4884dba32f8e260f9d551477f87f885001cc8bf44fb163b25d15cb22a4f36dad",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2023-12-13T19:00:05Z",
    "title_canon_sha256": "6eb82fc2676f1f0c086e61e64fd6fcd876a9d968e19ba10c248476ebf12566fe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2312.08449",
    "kind": "arxiv",
    "version": 2
  }
}