Pith Number

pith:UCAZGQXI

pith:2000:UCAZGQXI4JSXWSQRP22U2MI23C

not attested not anchored not stored refs pending

The Toronto Red-Sequence Cluster Survey: First Results

H.K.C. Yee, Michael D. Gladders

arxiv:astro-ph/0002340 v1 · 2000-02-17 · 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{UCAZGQXI4JSXWSQRP22U2MI23C}

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	2026-07-04T14:10:11.401121Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a0819342e8e2657b4a117eb54d311ad89bdb9520cf89ed7dd1e46e31b4845aad

Aliases

arxiv: astro-ph/0002340 · arxiv_version: astro-ph/0002340v1 · doi: 10.48550/arxiv.astro-ph/0002340 · pith_short_12: UCAZGQXI4JSX · pith_short_16: UCAZGQXI4JSXWSQR · pith_short_8: UCAZGQXI

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/UCAZGQXI4JSXWSQRP22U2MI23C \
  | 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: a0819342e8e2657b4a117eb54d311ad89bdb9520cf89ed7dd1e46e31b4845aad

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1ffcab41962bd85acbd073159c064cc5bb385c3c835cfb69f895d110b3da76a3",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-02-17T02:08:48Z",
    "title_canon_sha256": "9a8f130332fdfb01d74468ef2488d657b04e76a8e71abb60e4da34256a10077e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0002340",
    "kind": "arxiv",
    "version": 1
  }
}