Pith Number

pith:N377TIBU

pith:2018:N377TIBUQQQWEGWA6KSOU7WXT3

not attested not anchored not stored refs pending

VLBI imaging of M81* at 3.4 mm with source-frequency phase-referencing

Dong-Rong Jiang, Ivan Marti-Vidal, Noriyuki Kawaguchi, Wu Jiang, Zhi-Qiang Shen

arxiv:1801.04571 v1 · 2018-01-14 · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{N377TIBUQQQWEGWA6KSOU7WXT3}

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	2026-05-18T00:24:11.508424Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6efff9a0348421621ac0f2a4ea7ed79ecbb55c0a8c0305933e10261d37ab5a04

Aliases

arxiv: 1801.04571 · arxiv_version: 1801.04571v1 · doi: 10.48550/arxiv.1801.04571 · pith_short_12: N377TIBUQQQW · pith_short_16: N377TIBUQQQWEGWA · pith_short_8: N377TIBU

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/N377TIBUQQQWEGWA6KSOU7WXT3 \
  | 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: 6efff9a0348421621ac0f2a4ea7ed79ecbb55c0a8c0305933e10261d37ab5a04

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2f896f31315241df0fe67086f20d060e77d3eb209bbfb537de976f73022057d9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2018-01-14T15:11:17Z",
    "title_canon_sha256": "e5ea025845b731bcde67e8af8acf5947f281b284442715f6e5ccea866f25abb1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.04571",
    "kind": "arxiv",
    "version": 1
  }
}