Pith Number

pith:QDYPXSAY

pith:2010:QDYPXSAYT3BP7PJHLQLHBAUOEX

not attested not anchored not stored refs pending

Spectroscopic Confirmation of Three Red-Sequence Selected Galaxy Clusters at z=0.87, 1.16 and 1.21 from the SpARCS Survey

Adam Muzzin, David Gilbank, Gillian Wilson, Henk Hoekstra, H. K. C. Yee, Jason Surace, Kris Blindert, Mark Lacy, Ricardo Demarco

arxiv:1002.0160 v1 · 2010-01-31 · astro-ph.CO

Open paper page JSON Open Graph Bundle Merged state What is a Pith Number?

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	2026-05-18T02:09:21.634365Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

80f0fbc8189ec2ffbd275c1670828e25c58e264173c2e157856962bb3060e794

Aliases

arxiv: 1002.0160 · arxiv_version: 1002.0160v1 · doi: 10.48550/arxiv.1002.0160 · pith_short_12: QDYPXSAYT3BP · pith_short_16: QDYPXSAYT3BP7PJH · pith_short_8: QDYPXSAY

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/QDYPXSAYT3BP7PJHLQLHBAUOEX \
  | 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: 80f0fbc8189ec2ffbd275c1670828e25c58e264173c2e157856962bb3060e794

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "584ffe4c899f350d9a3a9c4dbc15089f34f356033e5d9914a00ac826da9cff18",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-01-31T22:19:59Z",
    "title_canon_sha256": "28ca7763341167d22747726c2e655049c8091c9b79ac46dbdb202be67585f782"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1002.0160",
    "kind": "arxiv",
    "version": 1
  }
}