Pith Number

pith:AGVC6UXJ

pith:2012:AGVC6UXJO5275GQ34GGVG7L3GJ

not attested not anchored not stored refs pending

Early science with Korean VLBI network: the QCAL-1 43GHz calibrator survey

Bong Gyu Kim, Bong Won Sohn, Do-Heung Je, Do-Young Byun, Hyun-Goo Kim, Hyunsoo Chung, Jiman Kang, Jongsoo Kim, Junghwan Oh, Jung-Won Lee, Leonid Petrov, Min-Gyu Song, Moon-Hee Chung, Sang-Sung Lee, Seog-Oh Wi, Seog-Tae Han, Taehyun Jung

arxiv:1207.5872 v2 · 2012-07-25 · astro-ph.IM · astro-ph.CO

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	2026-05-18T03:42:44.080350Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

01aa2f52e97775fe9a1be18d537d7b3250ead51145fce5c02baa7d6ad1e82df8

Aliases

arxiv: 1207.5872 · arxiv_version: 1207.5872v2 · doi: 10.48550/arxiv.1207.5872 · pith_short_12: AGVC6UXJO527 · pith_short_16: AGVC6UXJO5275GQ3 · pith_short_8: AGVC6UXJ

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/AGVC6UXJO5275GQ34GGVG7L3GJ \
  | 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: 01aa2f52e97775fe9a1be18d537d7b3250ead51145fce5c02baa7d6ad1e82df8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a2d57315589f4b3ef35e9a1d43ec184c91037bf6e7bd204f5e0d0e1c427b5046",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2012-07-25T02:52:30Z",
    "title_canon_sha256": "24c08ce51994b8bda524088a35dad4e034ae719a0239b03dab318a41a201029b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.5872",
    "kind": "arxiv",
    "version": 2
  }
}