Pith Number

pith:EYLFMP4S

pith:2001:EYLFMP4SMPTLSL2HFFNROC5RQW

not attested not anchored not stored refs pending

An Improved Measurement of the Hubble Constant from the Sunyaev-Zeldovich Effect

A.C.S. Readhead (Caltech), Brian S. Mason (Caltech), Steven T. Myers (NRAO)

arxiv:astro-ph/0101169 v1 · 2001-01-11 · astro-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{EYLFMP4SMPTLSL2HFFNROC5RQW}

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	2026-05-18T00:37:01.054600Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2616563f9263e6b92f47295b170bb185943685a4f1c8bb358e63293c83581879

Aliases

arxiv: astro-ph/0101169 · arxiv_version: astro-ph/0101169v1 · doi: 10.48550/arxiv.astro-ph/0101169 · pith_short_12: EYLFMP4SMPTL · pith_short_16: EYLFMP4SMPTLSL2H · pith_short_8: EYLFMP4S

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/EYLFMP4SMPTLSL2HFFNROC5RQW \
  | 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: 2616563f9263e6b92f47295b170bb185943685a4f1c8bb358e63293c83581879

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a440422dedfd8a4273accb308fc650ecfaf57ab5812e692a0b57a40922e827b8",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-01-11T00:42:34Z",
    "title_canon_sha256": "b45aa32031b2a88d9788b381959a9ce6438195056ff2680efe6c8e28488b0f37"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0101169",
    "kind": "arxiv",
    "version": 1
  }
}