Pith Number

pith:HJ5E5XPP

pith:2022:HJ5E5XPPWFTF5BKLKAV5WAXZUY

not attested not anchored not stored refs pending

Measuring the cosmic expansion rate using 21-cm velocity acoustic oscillations

Debanjan Sarkar, Ely D. Kovetz

arxiv:2210.16853 v1 · 2022-10-30 · astro-ph.CO · 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{HJ5E5XPPWFTF5BKLKAV5WAXZUY}

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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.

Cited by

2 papers in Pith

The Hubble Tension and Early Dark Energy

Primordial black holes and the velocity acoustic oscillations features in 21 cm signals from the cosmic Dark Ages

Receipt and verification

First computed	2026-07-05T05:39:23.647772Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3a7a4eddefb1665e854b502bdb02f9a60714d33081e5dd254c7ee4368bc447ab

Aliases

arxiv: 2210.16853 · arxiv_version: 2210.16853v1 · doi: 10.48550/arxiv.2210.16853 · pith_short_12: HJ5E5XPPWFTF · pith_short_16: HJ5E5XPPWFTF5BKL · pith_short_8: HJ5E5XPP

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/HJ5E5XPPWFTF5BKLKAV5WAXZUY \
  | 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: 3a7a4eddefb1665e854b502bdb02f9a60714d33081e5dd254c7ee4368bc447ab

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f6ba955ddf84227b31f28c0c86b116e077c770b7c7f82297a28c3ac64c8dacae",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2022-10-30T14:32:22Z",
    "title_canon_sha256": "204a39aff95cd78f820bfee2dcd4d814bd71ced25fbb24475a045ae15ee38a9e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2210.16853",
    "kind": "arxiv",
    "version": 1
  }
}