Pith Number

pith:DAXDDCDE

pith:2008:DAXDDCDEMQX6OTH2W2YUET2C7V

not attested not anchored not stored refs pending

A search for disk-galaxy lenses in the Sloan Digital Sky Survey

Chlo\'e F\'eron, Jens Hjorth, Johan Samsing, John P. McKean

arxiv:0810.0780 v2 · 2008-10-04 · astro-ph

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	2026-05-18T02:35:14.504851Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

182e318864642fe74cfab6b1424f42fd6c3ebea635f7420fd4b1c1a16075c191

Aliases

arxiv: 0810.0780 · arxiv_version: 0810.0780v2 · doi: 10.48550/arxiv.0810.0780 · pith_short_12: DAXDDCDEMQX6 · pith_short_16: DAXDDCDEMQX6OTH2 · pith_short_8: DAXDDCDE

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/DAXDDCDEMQX6OTH2W2YUET2C7V \
  | 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: 182e318864642fe74cfab6b1424f42fd6c3ebea635f7420fd4b1c1a16075c191

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "27ef2ecf3de21529a6f55930b9d43883b818cee017d7eb5b5904337ba06fa380",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-10-04T17:58:10Z",
    "title_canon_sha256": "d9f4ff67aed6ab3cfaa243c3a7921d739e08e519805be370fabb88309a1c4cac"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0810.0780",
    "kind": "arxiv",
    "version": 2
  }
}