Pith Number

pith:YTLP74F7

pith:2018:YTLP74F7YHBUKU2VHZLAAECNV2

not attested not anchored not stored refs pending

Long-term millimeter VLBI monitoring of M87 with KVN at milliarcsecond resolution: nuclear spectrum

Do-Young Byun, Guang-Yao Zhao, Jae-Young Kim, Jeffrey A. Hodgson, Juan-Carlos Algaba, Motoki Kino, Sang-Sung Lee, Sincheol Kang

arxiv:1801.10038 v2 · 2018-01-30 · astro-ph.GA

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	2026-05-18T00:22:54.678936Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c4d6fff0bfc1c34553553e5600104daea398c72c3adbd13b8d36d04f5e8846c3

Aliases

arxiv: 1801.10038 · arxiv_version: 1801.10038v2 · doi: 10.48550/arxiv.1801.10038 · pith_short_12: YTLP74F7YHBU · pith_short_16: YTLP74F7YHBUKU2V · pith_short_8: YTLP74F7

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/YTLP74F7YHBUKU2VHZLAAECNV2 \
  | 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: c4d6fff0bfc1c34553553e5600104daea398c72c3adbd13b8d36d04f5e8846c3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1f6b510ff80f0694d19c2c6a53db2d32c9af47b4d558e80c4a776203455377c7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-01-30T15:02:18Z",
    "title_canon_sha256": "f52f1a86ac4bddb7e681f85d011582b16fe304aa77a4c3d074df14bc0c7ad2b0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.10038",
    "kind": "arxiv",
    "version": 2
  }
}