Pith Number

pith:XRT2QHQZ

pith:2018:XRT2QHQZ2GUM4VIJOPE7DGSNPJ

not attested not anchored not stored refs pending

A comparison of the local spiral structure from Gaia DR2 and VLBI maser parallaxes

B. Zhang, J. J. Li, K. M. Menten, M. J. Reid, Q. Z. Yan, S. B. Bian, S. L. Liao, T. M. Dame, Y. Xu, Z. H. He, Z. H. Tang

arxiv:1807.00315 v2 · 2018-07-01 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XRT2QHQZ2GUM4VIJOPE7DGSNPJ}

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	2026-05-18T00:06:59.220028Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bc67a81e19d1a8ce550973c9f19a4d7a77cf292f46e40d9996a2a026ae574e23

Aliases

arxiv: 1807.00315 · arxiv_version: 1807.00315v2 · doi: 10.48550/arxiv.1807.00315 · pith_short_12: XRT2QHQZ2GUM · pith_short_16: XRT2QHQZ2GUM4VIJ · pith_short_8: XRT2QHQZ

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/XRT2QHQZ2GUM4VIJOPE7DGSNPJ \
  | 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: bc67a81e19d1a8ce550973c9f19a4d7a77cf292f46e40d9996a2a026ae574e23

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9a6cbe808c8b10681244a137ad6f1c3119d970221ceb272ea3a83d559fcc8fef",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-07-01T11:17:03Z",
    "title_canon_sha256": "7f16ae82d2b80f67299baadcd99282809d134bff4153096ab074588c21029b09"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.00315",
    "kind": "arxiv",
    "version": 2
  }
}