Pith Number

pith:LU6VMJKZ

pith:1995:LU6VMJKZTMSGPFK4JPDRRJAWRR

not attested not anchored not stored refs pending

The Discovery of Two Giant Arcs in the Rich Cluster A2219 with the Keck Telescope

Alastair C. Edge, David W. Hogg, Ian Smail, Judith G. Cohen, Roger Blandford, S. George Djorgovski

arxiv:astro-ph/9501097 v2 · 1995-01-27 · 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{LU6VMJKZTMSGPFK4JPDRRJAWRR}

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	2026-05-18T01:40:23.882696Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5d3d5625599b2467955c4bc718a4168c4da9bb484779ace9a12196768880c8cb

Aliases

arxiv: astro-ph/9501097 · arxiv_version: astro-ph/9501097v2 · doi: 10.48550/arxiv.astro-ph/9501097 · pith_short_12: LU6VMJKZTMSG · pith_short_16: LU6VMJKZTMSGPFK4 · pith_short_8: LU6VMJKZ

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/LU6VMJKZTMSGPFK4JPDRRJAWRR \
  | 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: 5d3d5625599b2467955c4bc718a4168c4da9bb484779ace9a12196768880c8cb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7ec292b0ca2f5fb7bd198eb7b040787681141997520955789421bb4704b79c4e",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1995-01-27T00:10:49Z",
    "title_canon_sha256": "70d85cade77af0876bd5b7769b231fcb45a4d38696d303ec074ffc5ca473f5a9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9501097",
    "kind": "arxiv",
    "version": 2
  }
}