Pith Number

pith:VPQ5XRAW

pith:2014:VPQ5XRAWNWVF3P2ORIDBXYPVKG

not attested not anchored not stored refs pending

VLBI observations of the radio quasar J2228+0110 at z=5.95 and other field sources in multiple-phase-centre mode

A.T. Deller, H.-M. Cao, J. Yang, L.I. Gurvits, S. Frey, \v{Z}. Ivezi\'c, X.-Y. Hong, Z. Paragi

arxiv:1402.2353 v1 · 2014-02-11 · astro-ph.GA · 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	2026-05-18T02:49:30.452577Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

abe1dbc4166daa5dbf4e8a061be1f551af2e1362f8874cee4f6e1d5172c4ca7e

Aliases

arxiv: 1402.2353 · arxiv_version: 1402.2353v1 · doi: 10.48550/arxiv.1402.2353 · pith_short_12: VPQ5XRAWNWVF · pith_short_16: VPQ5XRAWNWVF3P2O · pith_short_8: VPQ5XRAW

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/VPQ5XRAWNWVF3P2ORIDBXYPVKG \
  | 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: abe1dbc4166daa5dbf4e8a061be1f551af2e1362f8874cee4f6e1d5172c4ca7e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a0d62def76e1d0e5863841d90475c98502aa606b6818cea5ab3f1507fbe2a433",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2014-02-11T03:03:20Z",
    "title_canon_sha256": "324254d46662dcf52a8ef60b0436378530b1b679dfd32083f85befea8a61a653"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1402.2353",
    "kind": "arxiv",
    "version": 1
  }
}