Pith Number

pith:QO75CG2A

pith:2021:QO75CG2ALJK5WCP637BOBP6ACB

not attested not anchored not stored refs pending

Do current X-ray observations capture most of the black-hole accretion at high redshifts?

Casey Papovich, Fabio Vito, Feng Yuan, Guang Yang (TAMU), Jonelle L. Walsh, Vicente Estrada-Carpenter, Zhiyuan Yao

arxiv:2109.00078 v1 · 2021-08-31 · astro-ph.GA · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QO75CG2ALJK5WCP637BOBP6ACB}

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	2026-07-05T03:34:34.133031Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

83bfd11b405a55db09fedfc2e0bfc0104aa289f989e3d3ac19df9654e6141629

Aliases

arxiv: 2109.00078 · arxiv_version: 2109.00078v1 · doi: 10.48550/arxiv.2109.00078 · pith_short_12: QO75CG2ALJK5 · pith_short_16: QO75CG2ALJK5WCP6 · pith_short_8: QO75CG2A

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/QO75CG2ALJK5WCP637BOBP6ACB \
  | 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: 83bfd11b405a55db09fedfc2e0bfc0104aa289f989e3d3ac19df9654e6141629

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "08f3d02e8f3eccc621fa0033c438c771cecdecc077833fd29eab977257dcda4f",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-08-31T21:07:58Z",
    "title_canon_sha256": "7294cb42f7590072aee9a5e6f11406eb52d7e2d971cefa71de7bccfddc446269"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2109.00078",
    "kind": "arxiv",
    "version": 1
  }
}