Pith Number

pith:HF7EILAY

pith:2000:HF7EILAYESZOAPM3I5HAHJJMF5

not attested not anchored not stored refs pending

The Galaxy Environment of a Quasar at z=1.226: A Possible Cluster Merger

2), (2) Universidad de Chile, (3) UKIRT, A. J. Adamson (3) ((1) University of Central Lancashire, Chile, C. P. Haines (1, L. E. Campusano (2), R. G. Clowes (1), UK, USA)

arxiv:astro-ph/0011415 v1 · 2000-11-22 · 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{HF7EILAYESZOAPM3I5HAHJJMF5}

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	2026-05-18T01:40:45.279153Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

397e442c1824b2e03d9b474e03a52c2f7e2e4d2eaa6c5876286dbf7cdbebf324

Aliases

arxiv: astro-ph/0011415 · arxiv_version: astro-ph/0011415v1 · doi: 10.48550/arxiv.astro-ph/0011415 · pith_short_12: HF7EILAYESZO · pith_short_16: HF7EILAYESZOAPM3 · pith_short_8: HF7EILAY

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/HF7EILAYESZOAPM3I5HAHJJMF5 \
  | 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: 397e442c1824b2e03d9b474e03a52c2f7e2e4d2eaa6c5876286dbf7cdbebf324

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e930945fbef8a748f9d24a315d2d1df3d86fe82ae3bc27f7ade47241e5aefb9d",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-11-22T20:06:39Z",
    "title_canon_sha256": "6bb25cf40c8e417e6914125c7937516280a84ef4232396cec7514141b18d3797"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0011415",
    "kind": "arxiv",
    "version": 1
  }
}