Pith Number

pith:4TO2AALB

pith:2007:4TO2AALBLIKKSFFJ6H6XFWPLI7

not attested not anchored not stored refs pending

An absorption origin for the soft excess in Seyfert 1 AGN

C. Done, M. Gierlinski, M. J. Middleton

arxiv:0704.2970 v2 · 2007-04-23 · 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{4TO2AALBLIKKSFFJ6H6XFWPLI7}

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	2026-07-04T17:03:21.802015Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e4dda001615a14a914a9f1fd72d9eb47f972de5808a6c45e1ff2b8e111aef7f8

Aliases

arxiv: 0704.2970 · arxiv_version: 0704.2970v2 · doi: 10.48550/arxiv.0704.2970 · pith_short_12: 4TO2AALBLIKK · pith_short_16: 4TO2AALBLIKKSFFJ · pith_short_8: 4TO2AALB

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/4TO2AALBLIKKSFFJ6H6XFWPLI7 \
  | 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: e4dda001615a14a914a9f1fd72d9eb47f972de5808a6c45e1ff2b8e111aef7f8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "013f43f17894b0039a508d01ef1560b590cffbc1049e60172d54529aa78c0881",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-04-23T10:43:00Z",
    "title_canon_sha256": "4e77f4c724e3ead820bb0b20e6e125d68b1f0797caefe988ec61ab95c744266d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0704.2970",
    "kind": "arxiv",
    "version": 2
  }
}