Pith Number

pith:7UEF6ERZ

pith:2012:7UEF6ERZL2CX3KLTR5AUN656K5

not attested not anchored not stored refs pending

Spectral monitoring of AGNs: Preliminary results for Ark 564 and Arp 102B

A. I. Shapovalova, A. Kovacevic, A. N. Burenkov, D. Ilic, J. Kovacevic, L. C. Popovic, V. H. Chavushyan

arxiv:1201.2301 v3 · 2012-01-11 · 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{7UEF6ERZL2CX3KLTR5AUN656K5}

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	2026-05-18T00:21:15.207907Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fd085f12395e857da9738f4146fbbe574dbf008396c60ee584217c6c20fab90e

Aliases

arxiv: 1201.2301 · arxiv_version: 1201.2301v3 · doi: 10.48550/arxiv.1201.2301 · pith_short_12: 7UEF6ERZL2CX · pith_short_16: 7UEF6ERZL2CX3KLT · pith_short_8: 7UEF6ERZ

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/7UEF6ERZL2CX3KLTR5AUN656K5 \
  | 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: fd085f12395e857da9738f4146fbbe574dbf008396c60ee584217c6c20fab90e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "05cad2b61081959a2c20b00e707913d7d591abf389447d216cbd3f54a7e5823e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-01-11T13:32:18Z",
    "title_canon_sha256": "bcebd31ee34d26d1e9a83ec90fa3be02a415987350cfad028d05513b5ab71abf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.2301",
    "kind": "arxiv",
    "version": 3
  }
}