Pith Number

pith:P7WGJSN5

pith:2009:P7WGJSN5LP6A2M42WZ2UVCDP3R

not attested not anchored not stored refs pending

Hydrogen Balmer Emission Lines and the Complex Broad Line Region Structure

D. Ili\'c, F. Di Mille, G. La Mura, L. \v{C}. Popovi\'c, P. Rafanelli, S. Ciroi

arxiv:0910.1734 v1 · 2009-10-09 · astro-ph.CO · astro-ph.HE

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

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	2026-05-18T02:34:19.441165Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7fec64c9bd5bfc0d339ab6754a886fdc4b0c438cd606dfd8254df455b98b8bce

Aliases

arxiv: 0910.1734 · arxiv_version: 0910.1734v1 · doi: 10.48550/arxiv.0910.1734 · pith_short_12: P7WGJSN5LP6A · pith_short_16: P7WGJSN5LP6A2M42 · pith_short_8: P7WGJSN5

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/P7WGJSN5LP6A2M42WZ2UVCDP3R \
  | 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: 7fec64c9bd5bfc0d339ab6754a886fdc4b0c438cd606dfd8254df455b98b8bce

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f44f214cc72170cbe40871e57fbbd304f85061813521ba8a53e4d69ea44ebf8a",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-10-09T13:12:51Z",
    "title_canon_sha256": "a899ace6eb6612df5f244c8d746eb59617471bb24fb8bc9c01055f7544a3b609"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.1734",
    "kind": "arxiv",
    "version": 1
  }
}