Pith Number

pith:MY2P3653

pith:2013:MY2P3653LWV7ISRTT6WZSYUPVV

not attested not anchored not stored refs pending

Optical Spectra of Flat-Spectrum ICRF Radio Sources

A. Boldycheva, David L. Jauncey, Helen M. Johnston, K. Maslennikov, Laura M. Stanford, Oleg Titov, Richard W. Hunstead, Tapio Pursimo

arxiv:1305.3017 v1 · 2013-05-14 · 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{MY2P3653LWV7ISRTT6WZSYUPVV}

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	2026-05-18T03:25:45.107396Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6634fdfbbb5dabf44a339fad99628fad4892f64da134249d5a7b534ab948da94

Aliases

arxiv: 1305.3017 · arxiv_version: 1305.3017v1 · doi: 10.48550/arxiv.1305.3017 · pith_short_12: MY2P3653LWV7 · pith_short_16: MY2P3653LWV7ISRT · pith_short_8: MY2P3653

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/MY2P3653LWV7ISRTT6WZSYUPVV \
  | 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: 6634fdfbbb5dabf44a339fad99628fad4892f64da134249d5a7b534ab948da94

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "37bd80e6ac3614a9da783b5f93bc5411e49b58780afcbaa42bd7fee646fe84d5",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-05-14T04:22:27Z",
    "title_canon_sha256": "282bad61c4f0d2a41c921919508b92722dfcbb98f1d6461a39a9b7335d0e1bec"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.3017",
    "kind": "arxiv",
    "version": 1
  }
}