Pith Number

pith:A7SXEHNR

pith:2002:A7SXEHNR2W3TFTUFSMKFSFNYQM

not attested not anchored not stored refs pending

On-axis spatially resolved spectroscopy of low redshift quasar host galaxies: HE 1503+0228 at z=0.135

B. Kuhlbrodt, D. Alloin, D. Minniti, F. Courbin, G. Letawe, G. Meylan, I. Burud, K. Jahnke, L. Wisotzki, P. Jablonka, P. Magain

arxiv:astro-ph/0208514 v1 · 2002-08-28 · 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{A7SXEHNR2W3TFTUFSMKFSFNYQM}

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	2026-07-04T16:30:42.174184Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

07e5721db1d5b732ce8593145915b88336fbe312a72a9dd6d6b3ba27b5e9d725

Aliases

arxiv: astro-ph/0208514 · arxiv_version: astro-ph/0208514v1 · doi: 10.48550/arxiv.astro-ph/0208514 · pith_short_12: A7SXEHNR2W3T · pith_short_16: A7SXEHNR2W3TFTUF · pith_short_8: A7SXEHNR

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/A7SXEHNR2W3TFTUFSMKFSFNYQM \
  | 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: 07e5721db1d5b732ce8593145915b88336fbe312a72a9dd6d6b3ba27b5e9d725

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "382507c7776d2bc5d30c9e588468f5a21086e2d7d11b359742b1a75d753f9bb4",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-08-28T20:42:45Z",
    "title_canon_sha256": "1d9bec87ca406567f8ba9a02d492d5ad1b1f5152543fa638da764196db88abd5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0208514",
    "kind": "arxiv",
    "version": 1
  }
}