Pith Number

pith:PIVA5Y3K

pith:2016:PIVA5Y3KB34HX7PPSAAYSIWXZ6

not attested not anchored not stored refs pending

Gravitational waves from an SMBH binary in M87

Hiroki Kumamoto, Joseph Silk, Keitaro Takahashi, Naoyuki Yonemaru, Sachiko Kuroyanagi

arxiv:1601.08082 v3 · 2016-01-29 · astro-ph.CO · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PIVA5Y3KB34HX7PPSAAYSIWXZ6}

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	2026-05-18T00:44:46.071797Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7a2a0ee36a0ef87bfdef90018922d7cfae2dc186672d8c9d1788efb9818c16dc

Aliases

arxiv: 1601.08082 · arxiv_version: 1601.08082v3 · doi: 10.48550/arxiv.1601.08082 · pith_short_12: PIVA5Y3KB34H · pith_short_16: PIVA5Y3KB34HX7PP · pith_short_8: PIVA5Y3K

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/PIVA5Y3KB34HX7PPSAAYSIWXZ6 \
  | 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: 7a2a0ee36a0ef87bfdef90018922d7cfae2dc186672d8c9d1788efb9818c16dc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0ccf46e6e507bcef496a8b91cea1ffd1337ba1538488a603d8e951b959bbfef3",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2016-01-29T12:43:24Z",
    "title_canon_sha256": "716167d2f6e044ac5b5cdb738e41de8b5eb2d2c8debcea9ee0f6fb074bb1ba64"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1601.08082",
    "kind": "arxiv",
    "version": 3
  }
}