Pith Number

pith:XX7BPZ2H

pith:2003:XX7BPZ2HNHMPI2NNZG65AMSKT4

not attested not anchored not stored refs pending

Quasars: the characteristic spectrum and the induced radiative heating

J.P. Ostriker, R.A. Sunyaev, S.Yu. Sazonov

arxiv:astro-ph/0305233 v3 · 2003-05-13 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XX7BPZ2HNHMPI2NNZG65AMSKT4}

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	2026-05-18T01:07:33.591833Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bdfe17e74769d8f469adc9bdd0324a9f113693df77546019901a74dd963db99f

Aliases

arxiv: astro-ph/0305233 · arxiv_version: astro-ph/0305233v3 · doi: 10.48550/arxiv.astro-ph/0305233 · pith_short_12: XX7BPZ2HNHMP · pith_short_16: XX7BPZ2HNHMPI2NN · pith_short_8: XX7BPZ2H

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/XX7BPZ2HNHMPI2NNZG65AMSKT4 \
  | 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: bdfe17e74769d8f469adc9bdd0324a9f113693df77546019901a74dd963db99f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c922795193d14bf67b2db2e1617749886213d0a45d91b88955b353022fd6a12a",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-05-13T16:51:07Z",
    "title_canon_sha256": "0d3b11bc1ea14818a2c3a6008c624100a45be2120889519e8295496291726229"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0305233",
    "kind": "arxiv",
    "version": 3
  }
}