Pith Number

pith:DLWOYFVI

pith:2012:DLWOYFVIQHLB5VPWTTOCRA4X43

not attested not anchored not stored refs pending

The evolution of the Compton thick fraction and the nature of obscuration for AGN in the Chandra Deep Field South

Murray Brightman, Yoshihiro Ueda

arxiv:1203.1045 v2 · 2012-03-05 · astro-ph.HE · astro-ph.CO · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DLWOYFVIQHLB5VPWTTOCRA4X43}

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	2026-05-18T01:58:14.650049Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1aecec16a881d61ed5f69cdc288397e6f1619936be781cc4ba1e102790e758f4

Aliases

arxiv: 1203.1045 · arxiv_version: 1203.1045v2 · doi: 10.48550/arxiv.1203.1045 · pith_short_12: DLWOYFVIQHLB · pith_short_16: DLWOYFVIQHLB5VPW · pith_short_8: DLWOYFVI

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/DLWOYFVIQHLB5VPWTTOCRA4X43 \
  | 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: 1aecec16a881d61ed5f69cdc288397e6f1619936be781cc4ba1e102790e758f4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e38d84683ceed7636bfaa0c461df1032825451e630d66d6e9dfb4bbdbd5d438d",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2012-03-05T21:01:28Z",
    "title_canon_sha256": "69c6a4ee076b85424dfb08f6b837722493ad3c657ed6e4f924164481b440bb0c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.1045",
    "kind": "arxiv",
    "version": 2
  }
}