Pith Number

pith:WSGO2MEI

pith:2018:WSGO2MEIOU7U7NMQLPPJOXIAWM

not attested not anchored not stored refs pending

High-resolution radio imaging of two luminous quasars beyond redshift 4.5

A.E. Melnikov, F. Shu, O. Titov, P. de Vicente, S. Frey

arxiv:1807.06837 v1 · 2018-07-18 · astro-ph.GA · astro-ph.HE

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	2026-05-18T00:03:04.500105Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b48ced3088753f4fb5905bde975d00b302b429920828a56f7a87debe823deb76

Aliases

arxiv: 1807.06837 · arxiv_version: 1807.06837v1 · doi: 10.48550/arxiv.1807.06837 · pith_short_12: WSGO2MEIOU7U · pith_short_16: WSGO2MEIOU7U7NMQ · pith_short_8: WSGO2MEI

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/WSGO2MEIOU7U7NMQLPPJOXIAWM \
  | 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: b48ced3088753f4fb5905bde975d00b302b429920828a56f7a87debe823deb76

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b9032eedd86f9abbfeac0abb187b9d0a1dd4ce2540298fc709c98c71401dddac",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-07-18T10:02:36Z",
    "title_canon_sha256": "d7a5c9e370eaee85d2f718d38bf7ffd0eef9e88f4ee8c66ff0d7be6c5392eff3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.06837",
    "kind": "arxiv",
    "version": 1
  }
}