Pith Number

pith:5O6IDLFK

pith:2008:5O6IDLFKPYROTWQ3ZWMI3RRO5X

not attested not anchored not stored refs pending

The Chandra Deep Protocluster Survey: Evidence for an Enhancement in the AGN Activity in the SSA22 Protocluster at z = 3.09

A. Basu-Zych, B. D. Lehmer, C. A. Scharf, D. M. Alexander, F. E. Bauer, Ian Smail, J. E. Geach, M. Volonteri, S. C. Chapman, T. Yamada, Y. Matsuda

arxiv:0809.5058 v1 · 2008-09-29 · 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{5O6IDLFKPYROTWQ3ZWMI3RRO5X}

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	2026-05-18T02:35:14.625886Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ebbc81acaa7e22e9da1bcd988dc62eedec343823b9872a4da7ba7cd66f6bde09

Aliases

arxiv: 0809.5058 · arxiv_version: 0809.5058v1 · doi: 10.48550/arxiv.0809.5058 · pith_short_12: 5O6IDLFKPYRO · pith_short_16: 5O6IDLFKPYROTWQ3 · pith_short_8: 5O6IDLFK

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/5O6IDLFKPYROTWQ3ZWMI3RRO5X \
  | 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: ebbc81acaa7e22e9da1bcd988dc62eedec343823b9872a4da7ba7cd66f6bde09

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b5622d7adeda6b558849b804ae5a86c11a2c71536b486af649e529fc8e9f0f0f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-09-29T20:12:13Z",
    "title_canon_sha256": "f1bff920db665c0dd4e8aa454f5b73383f5e0e6d8d08046147daf33d95f09f2b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0809.5058",
    "kind": "arxiv",
    "version": 1
  }
}