Pith Number

pith:3VKNGSBK

pith:1998:3VKNGSBKBJ6NUG4X4HN5V4D5AM

not attested not anchored not stored refs pending

Direct Measurement of Cosmological Parameters from the Cosmic Deceleration of Extragalactic Objects

Abraham Loeb (Harvard University)

arxiv:astro-ph/9802122 v1 · 1998-02-11 · 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{3VKNGSBKBJ6NUG4X4HN5V4D5AM}

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.

Cited by

3 papers in Pith

Direct detection of the cosmic expansion: the redshift drift and the flux drift

Expected redshift drift for tilted observers

Nonlinear Relativistic Effects on Cosmological Redshift Drift

Receipt and verification

First computed	2026-05-18T04:28:57.249184Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dd54d3482a0a7cda1b97e1dbdaf07d0304f5c4c5946664119a3253882097a3b2

Aliases

arxiv: astro-ph/9802122 · arxiv_version: astro-ph/9802122v1 · doi: 10.48550/arxiv.astro-ph/9802122 · pith_short_12: 3VKNGSBKBJ6N · pith_short_16: 3VKNGSBKBJ6NUG4X · pith_short_8: 3VKNGSBK

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/3VKNGSBKBJ6NUG4X4HN5V4D5AM \
  | 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: dd54d3482a0a7cda1b97e1dbdaf07d0304f5c4c5946664119a3253882097a3b2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c78e36788aa79b3897f87d4ada4049ac815c160751d3724ca2f35de8ccd9cfc5",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-02-11T01:01:18Z",
    "title_canon_sha256": "86f30141303a1d5ea086046d550a2e510ad687cf12981b359954d5f0e9b79436"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9802122",
    "kind": "arxiv",
    "version": 1
  }
}