Pith Number

pith:D4JQUMSS

pith:2018:D4JQUMSSQMQSF6DVVSCCEE372B

not attested not anchored not stored refs pending

Unidentified quasars among stationary objects from Gaia DR2

E. H{\o}g, J.-K. Krogager, J. P. U. Fynbo, K. E. Heintz, L. Christensen, P. Jakobsson, P. M{\o}ller, S. Geier

arxiv:1805.03394 v1 · 2018-05-09 · astro-ph.GA · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{D4JQUMSSQMQSF6DVVSCCEE372B}

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	2026-05-18T00:09:53.598561Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1f130a3252832122f875ac8422137fd06b6627e9bb2c27ae2bd76a0873749ee7

Aliases

arxiv: 1805.03394 · arxiv_version: 1805.03394v1 · doi: 10.48550/arxiv.1805.03394 · pith_short_12: D4JQUMSSQMQS · pith_short_16: D4JQUMSSQMQSF6DV · pith_short_8: D4JQUMSS

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/D4JQUMSSQMQSF6DVVSCCEE372B \
  | 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: 1f130a3252832122f875ac8422137fd06b6627e9bb2c27ae2bd76a0873749ee7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "12f845c34107d8e76b33e95aadff5573df986b1e5e6fb4997cf28137494f7a31",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-05-09T07:28:47Z",
    "title_canon_sha256": "6352bf2b7810757a7febf61f04814a1eab53556bc4ae4a33c7e31c97f2485706"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.03394",
    "kind": "arxiv",
    "version": 1
  }
}