Pith Number

pith:KYYS52LG

pith:2015:KYYS52LGWWQRDU5KHTSTKJVVG4

not attested not anchored not stored refs pending

VLBI observation of the newly discovered z=5.18 quasar SDSS J0131-0321

D. Cseh, K. E. Gabanyi, L. I. Gurvits, S. Frey, T. An, Y. K. Zhang, Z. Paragi

arxiv:1503.06593 v1 · 2015-03-23 · astro-ph.HE · astro-ph.GA

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	2026-05-18T01:26:25.395717Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

56312ee966b5a111d3aa3ce53526b53718853a1df2fff87db75164d42908235b

Aliases

arxiv: 1503.06593 · arxiv_version: 1503.06593v1 · doi: 10.48550/arxiv.1503.06593 · pith_short_12: KYYS52LGWWQR · pith_short_16: KYYS52LGWWQRDU5K · pith_short_8: KYYS52LG

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/KYYS52LGWWQRDU5KHTSTKJVVG4 \
  | 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: 56312ee966b5a111d3aa3ce53526b53718853a1df2fff87db75164d42908235b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f3ef99ffaaa9f0f973787d323d7aac0ff7b8ecd249a8a09c9dc27d0694e96b1d",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2015-03-23T10:49:52Z",
    "title_canon_sha256": "34d864055c239946aae4991176e7f1535a5dfa4c04309c1608c11b8ecae9e387"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.06593",
    "kind": "arxiv",
    "version": 1
  }
}