Pith Number

pith:RSUNPBVY

pith:2015:RSUNPBVYLJ2MZC35FAX6M22KU4

not attested not anchored not stored refs pending

RadioAstron space VLBI imaging of polarized radio emission in the high-redshift quasar 0642+449 at 1.6 GHz

A. Kraus, A. P. Lobanov, G. Bruni, J. Anderson, J. A. Zensus, J. L. G\'omez, K. V. Sokolovsky, M. M. Lisakov, P. A. Voytsik, U. Bach, Y. Y. Kovalev

arxiv:1504.04273 v2 · 2015-04-16 · astro-ph.GA · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RSUNPBVYLJ2MZC35FAX6M22KU4}

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	2026-05-18T01:27:54.311208Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8ca8d786b85a74cc8b7d282fe66b4aa7355bcd9f9277f97a54f2036f4960d06c

Aliases

arxiv: 1504.04273 · arxiv_version: 1504.04273v2 · doi: 10.48550/arxiv.1504.04273 · pith_short_12: RSUNPBVYLJ2M · pith_short_16: RSUNPBVYLJ2MZC35 · pith_short_8: RSUNPBVY

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/RSUNPBVYLJ2MZC35FAX6M22KU4 \
  | 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: 8ca8d786b85a74cc8b7d282fe66b4aa7355bcd9f9277f97a54f2036f4960d06c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bac58ffc450510561198f41e0184e5face0c2c94e8c2b9984bce4aa5134c82e7",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-04-16T15:21:51Z",
    "title_canon_sha256": "e8718e58ec065778dec98b165dfb45a58ebd47c5fa95262eb9aca9767003be4b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.04273",
    "kind": "arxiv",
    "version": 2
  }
}