Pith Number

pith:RTY4IIEH

pith:2001:RTY4IIEHHCBNHYMDHDSHUICCZI

not attested not anchored not stored refs pending

HI absorption from the central kpc of radio galaxies: effect of orientation or interstellar medium?

A. Capetti, C.N. Tadhunter, G. van Moorsel, H. de Ruiter, K.A. Wills, P. Parma, R. Fanti, R. Morganti, T.A. Oosterloo

arxiv:astro-ph/0107501 v1 · 2001-07-26 · 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{RTY4IIEHHCBNHYMDHDSHUICCZI}

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	2026-07-04T14:11:24.032463Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8cf1c420873882d3e18338e47a2042ca3dbe3591ae88ec770223b9ef4d8eb8b9

Aliases

arxiv: astro-ph/0107501 · arxiv_version: astro-ph/0107501v1 · doi: 10.48550/arxiv.astro-ph/0107501 · pith_short_12: RTY4IIEHHCBN · pith_short_16: RTY4IIEHHCBNHYMD · pith_short_8: RTY4IIEH

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/RTY4IIEHHCBNHYMDHDSHUICCZI \
  | 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: 8cf1c420873882d3e18338e47a2042ca3dbe3591ae88ec770223b9ef4d8eb8b9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fef68033351d8eab46a75f8c5cfd8eb7c8308995760d755e644db86b3c32068c",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-07-26T13:29:28Z",
    "title_canon_sha256": "fb636562bb51444d31a6e56e4497c30557eaab475d897fc9b5ae7a9bb4b775cf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0107501",
    "kind": "arxiv",
    "version": 1
  }
}