Pith Number

pith:2FN6OEOT

pith:2013:2FN6OEOT7K7WRA3TUCUGE2VM7C

not attested not anchored not stored refs pending

High resolution deep imaging of a bright radio quiet QSO at z~3

Ichi Tanaka, Masanori Iye, Toru Yamada, Tuo Ji, Wei He, Yiping Wang

arxiv:1301.1129 v4 · 2013-01-07 · 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	2026-05-18T01:01:29.655078Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d15be711d3fabf688373a0a8626aacf8af63da5a771ab6d3a739c68b8047c5d8

Aliases

arxiv: 1301.1129 · arxiv_version: 1301.1129v4 · doi: 10.48550/arxiv.1301.1129 · pith_short_12: 2FN6OEOT7K7W · pith_short_16: 2FN6OEOT7K7WRA3T · pith_short_8: 2FN6OEOT

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/2FN6OEOT7K7WRA3TUCUGE2VM7C \
  | 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: d15be711d3fabf688373a0a8626aacf8af63da5a771ab6d3a739c68b8047c5d8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d34253912be3ce18a99061a74332a9b089a3cb7d0e959182c94e39d19c872e50",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-01-07T09:02:17Z",
    "title_canon_sha256": "4aefdc3aa093cc6055ecafd61413770a8426e723ae0cf0be53dee7bd4c59eedc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.1129",
    "kind": "arxiv",
    "version": 4
  }
}