Pith Number

pith:CUST5ING

pith:2025:CUST5INGLAB4DEHJQUMMLOHL47

not attested not anchored not stored refs pending

Constraining compact dark matter with time-varying quasar equivalent widths

Frederic Courbin, Georgios Vernardos, James Hung Hsu Chan

arxiv:2507.02046 v1 · 2025-07-02 · 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{CUST5INGLAB4DEHJQUMMLOHL47}

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	2026-07-05T11:31:11.081042Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

15253ea1a65803c190e98518c5b8ebe7f7a2e99316396d07874715a51285c2bf

Aliases

arxiv: 2507.02046 · arxiv_version: 2507.02046v1 · doi: 10.48550/arxiv.2507.02046 · pith_short_12: CUST5INGLAB4 · pith_short_16: CUST5INGLAB4DEHJ · pith_short_8: CUST5ING

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/CUST5INGLAB4DEHJQUMMLOHL47 \
  | 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: 15253ea1a65803c190e98518c5b8ebe7f7a2e99316396d07874715a51285c2bf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9a078cf7be2e417edd5e66bf73ab4933cc05f1a17d82b57b61e681a4b41d0bcf",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2025-07-02T18:00:02Z",
    "title_canon_sha256": "99cf7662a779fd580fe913f210bc5429aa05f62b32683a913b5bc0eb356fd09f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2507.02046",
    "kind": "arxiv",
    "version": 1
  }
}