Pith Number

pith:COP2H4MQ

pith:2026:COP2H4MQJMMUGFBD3KHQRSJMCD

not attested not anchored not stored refs pending

A model-independent measurement of the Hubble constant from gravitational-wave standard sirens and electromagnetic observations

Gaurav N. Gadbail, Kazuharu Bamba

arxiv:2602.04497 v2 · 2026-02-04 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{COP2H4MQJMMUGFBD3KHQRSJMCD}

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	2026-06-03T01:05:10.110626Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

139fa3f1904b19431423da8f08c92c10d84a0d912ac2bce30f29c83f51096cea

Aliases

arxiv: 2602.04497 · arxiv_version: 2602.04497v2 · doi: 10.48550/arxiv.2602.04497 · pith_short_12: COP2H4MQJMMU · pith_short_16: COP2H4MQJMMUGFBD · pith_short_8: COP2H4MQ

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/COP2H4MQJMMUGFBD3KHQRSJMCD \
  | 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: 139fa3f1904b19431423da8f08c92c10d84a0d912ac2bce30f29c83f51096cea

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3335acd6c693d672ffb01eb10e2991122eb3b1c39f302eb239ed348a37d6b8a2",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2026-02-04T12:43:05Z",
    "title_canon_sha256": "a1d8f0efcca2c999f0a10cf2b5e1c46c9fe5f3555733e7908a3e0a89adc6cb35"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2602.04497",
    "kind": "arxiv",
    "version": 2
  }
}