Pith Number

pith:5EPJJG54

pith:2006:5EPJJG546BIVODA4TUGZAAVIC2

not attested not anchored not stored refs pending

Active galactic nuclei and massive galaxy cores

Joe Silk, Scott Kay, Sebastien Peirani

arxiv:astro-ph/0612468 v2 · 2006-12-16 · 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{5EPJJG546BIVODA4TUGZAAVIC2}

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	2026-05-18T01:40:28.396347Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e91e949bbcf051570c1c9d0d9002a81699e4dd349d45f265e738d3de0d4d06e3

Aliases

arxiv: astro-ph/0612468 · arxiv_version: astro-ph/0612468v2 · doi: 10.48550/arxiv.astro-ph/0612468 · pith_short_12: 5EPJJG546BIV · pith_short_16: 5EPJJG546BIVODA4 · pith_short_8: 5EPJJG54

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/5EPJJG546BIVODA4TUGZAAVIC2 \
  | 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: e91e949bbcf051570c1c9d0d9002a81699e4dd349d45f265e738d3de0d4d06e3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "49a671f3dad1104140f1c241c137c395f307b4add99fa812870dd76adbd26e3e",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-12-16T23:43:39Z",
    "title_canon_sha256": "55b08d8169b7114fa12d22bc61134e97d3267dac42c38193dba0b14708df68ec"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0612468",
    "kind": "arxiv",
    "version": 2
  }
}