Pith Number

pith:A7FJQ5WQ

pith:2015:A7FJQ5WQ5OXH6PURP3VMMXCFHJ

not attested not anchored not stored refs pending

Maser Astrometry with VLBI and the SKA

Andreas Brunthaler, Anita Richards, Hiroshi Imai, Huib Jan van Langevelde, James A. Green, Mark Reid, Simon Ellingsen, Wouter Vlemmings

arxiv:1504.00485 v1 · 2015-04-02 · 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{A7FJQ5WQ5OXH6PURP3VMMXCFHJ}

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	2026-05-18T02:19:43.208445Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

07ca9876d0ebae7f3e917eeac65c453a7e2d6b38d9baa135252416805cbb71f0

Aliases

arxiv: 1504.00485 · arxiv_version: 1504.00485v1 · doi: 10.48550/arxiv.1504.00485 · pith_short_12: A7FJQ5WQ5OXH · pith_short_16: A7FJQ5WQ5OXH6PUR · pith_short_8: A7FJQ5WQ

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/A7FJQ5WQ5OXH6PURP3VMMXCFHJ \
  | 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: 07ca9876d0ebae7f3e917eeac65c453a7e2d6b38d9baa135252416805cbb71f0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "16b2a9df87a124bf6baf1423d83ae269fae4bcbb29d0696ffd9750e6a0b2bbcf",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-04-02T09:25:02Z",
    "title_canon_sha256": "57ebd6e47cdeb5f40113039471729ac576daaa27c9f9f6f7d1f22b5a0dcbc64f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.00485",
    "kind": "arxiv",
    "version": 1
  }
}