Pith Number

pith:PFO75UAC

pith:2000:PFO75UACIDOMI5HM5KMCPVCZO2

not attested not anchored not stored refs pending

The Arecibo OH Megamaser Survey and the Galaxy Merger Rate

Jeremy Darling, Riccardo Giovanelli

arxiv:astro-ph/0009205 v1 · 2000-09-13 · 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{PFO75UACIDOMI5HM5KMCPVCZO2}

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	2026-07-04T14:10:43.250217Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

795dfed00240dcc474ecea9827d4597690392f60778b73a9e610d33b54ef4fdc

Aliases

arxiv: astro-ph/0009205 · arxiv_version: astro-ph/0009205v1 · doi: 10.48550/arxiv.astro-ph/0009205 · pith_short_12: PFO75UACIDOM · pith_short_16: PFO75UACIDOMI5HM · pith_short_8: PFO75UAC

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/PFO75UACIDOMI5HM5KMCPVCZO2 \
  | 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: 795dfed00240dcc474ecea9827d4597690392f60778b73a9e610d33b54ef4fdc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0dd3a99fca51b375467122de28d5866b9524fb722f03244f76322e8a5b25f566",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-09-13T15:12:25Z",
    "title_canon_sha256": "9a7401ad73151c440695f09fc00ed4925353abb309a8c252e1c0755e7a661372"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0009205",
    "kind": "arxiv",
    "version": 1
  }
}