Pith Number

pith:NF4ZHCYI

pith:2011:NF4ZHCYIY7MOWXV2EMOGR62CBK

not attested not anchored not stored refs pending

Feeding and feedback in the active nucleus of Mrk 1157 probed with Gemini Near-Infrared Integral-Field Spectrograph

Rogemar A. Riffel, Thaisa Storchi-Bergmann

arxiv:1107.2564 v2 · 2011-07-13 · 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{NF4ZHCYIY7MOWXV2EMOGR62CBK}

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	2026-05-18T02:01:19.061219Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6979938b08c7d8eb5eba231c68fb420a9f9457f9a91ea83b4d4a7555c0980f94

Aliases

arxiv: 1107.2564 · arxiv_version: 1107.2564v2 · doi: 10.48550/arxiv.1107.2564 · pith_short_12: NF4ZHCYIY7MO · pith_short_16: NF4ZHCYIY7MOWXV2 · pith_short_8: NF4ZHCYI

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/NF4ZHCYIY7MOWXV2EMOGR62CBK \
  | 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: 6979938b08c7d8eb5eba231c68fb420a9f9457f9a91ea83b4d4a7555c0980f94

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c7b60e2f9bd425b79edf165b3c9a1578e6828e4ae1af5c737606bfd115920d14",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-07-13T14:44:23Z",
    "title_canon_sha256": "186b5ab365316681b5c0fec92b257b5572361c727f85b6e653db887b1cb16b20"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1107.2564",
    "kind": "arxiv",
    "version": 2
  }
}