Pith Number

pith:IE43ZVWU

pith:2000:IE43ZVWUZJCWM6A7VXDKYCD7EU

not attested not anchored not stored refs pending

Observational signatures of feedback in QSO absorption spectra

2), (2) Max-Planck Institute, Cambridge, Garching), H. J. Mo (2), Joop Schaye (1) ((1) Institute of Astronomy, Tom Theuns (1

arxiv:astro-ph/0006065 v2 · 2000-06-05 · 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{IE43ZVWUZJCWM6A7VXDKYCD7EU}

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	2026-05-18T04:14:55.551120Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4139bcd6d4ca4566781fadc6ac087f25212243ec09518036edaa2d2639064f1f

Aliases

arxiv: astro-ph/0006065 · arxiv_version: astro-ph/0006065v2 · doi: 10.48550/arxiv.astro-ph/0006065 · pith_short_12: IE43ZVWUZJCW · pith_short_16: IE43ZVWUZJCWM6A7 · pith_short_8: IE43ZVWU

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/IE43ZVWUZJCWM6A7VXDKYCD7EU \
  | 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: 4139bcd6d4ca4566781fadc6ac087f25212243ec09518036edaa2d2639064f1f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0bb00f0e6dea9e1bea5785925cbe7bcb5cd7b668cdce8b9477ea3ee0e4dc28fc",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-06-05T11:23:58Z",
    "title_canon_sha256": "153c17bbb1e7c2706ef73aa291177f42b48fc4452de8399c4e3d699a2cd10546"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0006065",
    "kind": "arxiv",
    "version": 2
  }
}