Pith Number

pith:NPRF7KAC

pith:2019:NPRF7KAC5XQAANC6ECROR6UZJ2

not attested not anchored not stored refs pending

MFB: A Mid-Frequency-Band Space Gravitational Wave Observer for the 2020 Decade

Ilya Mandel, John Lipa, Peter F. Michelson, Robert L. Byer, Sasha Buchman, Shally Saraf

arxiv:1908.02861 v1 · 2019-08-07 · astro-ph.IM · physics.space-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NPRF7KAC5XQAANC6ECROR6UZJ2}

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	2026-07-04T23:52:24.185195Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6be25fa802ede000345e20a2e8fa994eb68732ccda2f2f20c36ac7b61df861d9

Aliases

arxiv: 1908.02861 · arxiv_version: 1908.02861v1 · doi: 10.48550/arxiv.1908.02861 · pith_short_12: NPRF7KAC5XQA · pith_short_16: NPRF7KAC5XQAANC6 · pith_short_8: NPRF7KAC

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/NPRF7KAC5XQAANC6ECROR6UZJ2 \
  | 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: 6be25fa802ede000345e20a2e8fa994eb68732ccda2f2f20c36ac7b61df861d9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6c5279c5c37fa20b7cb115d422845c11adcb24de2b6a1b004ff95455b293d272",
    "cross_cats_sorted": [
      "physics.space-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2019-08-07T22:26:28Z",
    "title_canon_sha256": "37f5e7c0284b4f5f54f5b5fba26b25d067d5e247a93c38f1918cdc5cfebdebb3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.02861",
    "kind": "arxiv",
    "version": 1
  }
}