Pith Number

pith:Z5QYR4JA

pith:2005:Z5QYR4JAQMDBUZR2LO4LWGTXMU

not attested not anchored not stored refs pending

The Millennium Galaxy Catalogue: The nearby supermassive black hole mass function

Alister W. Graham, Jochen Liske, Paul D. Allen, Simon P. Driver

arxiv:astro-ph/0509704 v1 · 2005-09-23 · astro-ph

Open paper page JSON Open Graph Bundle Merged state What is a Pith Number?

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	2026-05-18T01:07:28.837675Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cf6188f12083061a663a5bb8bb1a77651c8cdb3fab675c0ff35745e53a11c6be

Aliases

arxiv: astro-ph/0509704 · arxiv_version: astro-ph/0509704v1 · doi: 10.48550/arxiv.astro-ph/0509704 · pith_short_12: Z5QYR4JAQMDB · pith_short_16: Z5QYR4JAQMDBUZR2 · pith_short_8: Z5QYR4JA

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/Z5QYR4JAQMDBUZR2LO4LWGTXMU \
  | 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: cf6188f12083061a663a5bb8bb1a77651c8cdb3fab675c0ff35745e53a11c6be

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5831436ae92a7357938f0ec0dec998fcbdbc876b1f4f92bee982dd4058b0c8d3",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-09-23T04:35:15Z",
    "title_canon_sha256": "52b672e59c8a07e201bf7db8af295dbb77bc0b96e2f3a77b38edcabdf58ccde9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0509704",
    "kind": "arxiv",
    "version": 1
  }
}