Pith Number

pith:PFDSGZ7M

pith:2018:PFDSGZ7MAMDM77APEGCBBL5WBZ

not attested not anchored not stored refs pending

H2O MegaMasers: a RadioAstron success story

Alexander Tolmachev, Alexey Alakoz, Andrej Sobolev, Christian Henkel, Hiroshi Imai, Ivan Litovchenko, James Moran, Simon Ellingsen, Tao An, Vladimir Kostenko, Willem Baan

arxiv:1801.08796 v2 · 2018-01-26 · 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{PFDSGZ7MAMDM77APEGCBBL5WBZ}

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	2026-05-18T00:07:35.221637Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

79472367ec0306cffc0f218410afb60e63d588b9c735361f85c98435a9fd1a3b

Aliases

arxiv: 1801.08796 · arxiv_version: 1801.08796v2 · doi: 10.48550/arxiv.1801.08796 · pith_short_12: PFDSGZ7MAMDM · pith_short_16: PFDSGZ7MAMDM77AP · pith_short_8: PFDSGZ7M

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/PFDSGZ7MAMDM77APEGCBBL5WBZ \
  | 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: 79472367ec0306cffc0f218410afb60e63d588b9c735361f85c98435a9fd1a3b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1af632b17a586272a46c18f757f7d0c993fa0f794c1fb1e838d0cd34e7dfb4f0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-01-26T13:19:12Z",
    "title_canon_sha256": "289f61d1fac46c51a4ba42c47f05493006064a4e685fdc75e22911090695bdb4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.08796",
    "kind": "arxiv",
    "version": 2
  }
}