Pith Number

pith:RGKVNH4Q

pith:2018:RGKVNH4QMLUMYFMM6GQWIVWPLM

not attested not anchored not stored refs pending

Spiral arm crossings inferred from ridges in Gaia stellar velocity distributions

Alice C. Quillen, Arman Khalatyan, Cristina Chiappini, Friedrich Anders, Giacomo Monari, Ismael Carrillo, Ivan Minchev, Matthias Steinmetz, Paul McMillan, Tariq Hilmi

arxiv:1805.10236 v3 · 2018-05-25 · 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	2026-05-18T00:08:41.571256Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8995569f9062e8cc158cf1a16456cf5b12d733bc3d2c28d1662564a65fc9a7b5

Aliases

arxiv: 1805.10236 · arxiv_version: 1805.10236v3 · doi: 10.48550/arxiv.1805.10236 · pith_short_12: RGKVNH4QMLUM · pith_short_16: RGKVNH4QMLUMYFMM · pith_short_8: RGKVNH4Q

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/RGKVNH4QMLUMYFMM6GQWIVWPLM \
  | 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: 8995569f9062e8cc158cf1a16456cf5b12d733bc3d2c28d1662564a65fc9a7b5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f80dc8c2d4889f0bc0132aaa42c9327066d98ee4f9cbce8259785cf477193b4a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-05-25T16:23:01Z",
    "title_canon_sha256": "bdab0dfce9f76266aed35c69ddb300f576947a168ee8aa05b6cb9d78c7f9fe49"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.10236",
    "kind": "arxiv",
    "version": 3
  }
}