Pith Number

pith:Q3CDCIDJ

pith:2004:Q3CDCIDJ2XVX34TCP53N6LRDCK

not attested not anchored not stored refs pending

Detection of 21 Centimeter HI Absorption at z = 0.78 in a Survey of Radio Continuum Sources

Alberto D. Bolatto, Geoffrey C. Bower, Jeremy Darling, Martha P. Haynes, Riccardo Giovanelli

arxiv:astro-ph/0408531 v1 · 2004-08-27 · 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{Q3CDCIDJ2XVX34TCP53N6LRDCK}

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	2026-07-04T16:44:34.788128Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

86c4312069d5eb7df2627f76df2e231281f31900c29bdfc17787031ae896aa6e

Aliases

arxiv: astro-ph/0408531 · arxiv_version: astro-ph/0408531v1 · doi: 10.48550/arxiv.astro-ph/0408531 · pith_short_12: Q3CDCIDJ2XVX · pith_short_16: Q3CDCIDJ2XVX34TC · pith_short_8: Q3CDCIDJ

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/Q3CDCIDJ2XVX34TCP53N6LRDCK \
  | 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: 86c4312069d5eb7df2627f76df2e231281f31900c29bdfc17787031ae896aa6e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1361abc66a51899c477dd41a59419f6d004253c26ea0b8a797fc456c298f6155",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-08-27T23:44:40Z",
    "title_canon_sha256": "30b2dbcc0c26ccd04b230802d8099446460131aac693ab6e707683e3e7b53212"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0408531",
    "kind": "arxiv",
    "version": 1
  }
}