Pith Number

pith:4RWHVM6E

pith:2009:4RWHVM6ED55DYVMVIZNOUKYSYV

not attested not anchored not stored refs pending

PKS 0537-286, carrying the information of the environment of SMBHs in the early Universe

A. K\"upc\"u Yoldas, A. Rau, E. Bottacini, E. Palazzi, E. Pian, G. Ghisellini, J. Greiner, M. Ajello, N. Cappelluti, P. Afonso, S. Covin, T. Kr\"uhler

arxiv:0910.2463 v1 · 2009-10-13 · astro-ph.HE · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4RWHVM6ED55DYVMVIZNOUKYSYV}

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	2026-05-18T02:11:23.979912Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e46c7ab3c41f7a3c5595465aea2b12c54b93650f94a9237ae53edea5899f737b

Aliases

arxiv: 0910.2463 · arxiv_version: 0910.2463v1 · doi: 10.48550/arxiv.0910.2463 · pith_short_12: 4RWHVM6ED55D · pith_short_16: 4RWHVM6ED55DYVMV · pith_short_8: 4RWHVM6E

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/4RWHVM6ED55DYVMVIZNOUKYSYV \
  | 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: e46c7ab3c41f7a3c5595465aea2b12c54b93650f94a9237ae53edea5899f737b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2c9cd0b8b9a232fdb0216e278e955e23e1ee3ef0afccd0aaff01c68075264355",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2009-10-13T20:01:24Z",
    "title_canon_sha256": "965e37ba77a17a72badaa0553441b0582f231fcce00eecf5a20e1b362f393385"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.2463",
    "kind": "arxiv",
    "version": 1
  }
}