Pith Number

pith:HQLCHGRT

pith:1999:HQLCHGRTGIIFGPPR23GV3TXQH6

not attested not anchored not stored refs pending

A Baseband Recorder for Radio Pulsar Observations

D. J. Nice, E. M. Splaver, I. H. Stairs, J. H. Taylor, S. E. Thorsett

arxiv:astro-ph/9912272 v2 · 1999-12-14 · 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{HQLCHGRTGIIFGPPR23GV3TXQH6}

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	2026-07-04T16:12:00.885799Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3c16239a333210533df1d6cd5dcef03f9b8c2f85cae18b62d4aad79767d22edf

Aliases

arxiv: astro-ph/9912272 · arxiv_version: astro-ph/9912272v2 · doi: 10.48550/arxiv.astro-ph/9912272 · pith_short_12: HQLCHGRTGIIF · pith_short_16: HQLCHGRTGIIFGPPR · pith_short_8: HQLCHGRT

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/HQLCHGRTGIIFGPPR23GV3TXQH6 \
  | 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: 3c16239a333210533df1d6cd5dcef03f9b8c2f85cae18b62d4aad79767d22edf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3acc4b512978fb81412efff1fe539e7756c63e801d42d97b80c7cb34fd1de802",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-12-14T14:11:11Z",
    "title_canon_sha256": "f07e40b086789af202cfb7c3ff0681931ec4bc20663668e686e6418c5677764e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9912272",
    "kind": "arxiv",
    "version": 2
  }
}