Pith Number

pith:NNNIBFOY

pith:2017:NNNIBFOY7OXWFDGCOB6CWO4D2I

not attested not anchored not stored refs pending

The role of environment on the star formation history of disc galaxies

Fenghui Zhang, Ruixiang Chang, Xiaoyu Kang

arxiv:1704.07697 v1 · 2017-04-25 · 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	2026-05-18T00:40:03.902074Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6b5a8095d8fbaf628cc2707c2b3b83d22e3183c5959d6eecf6deb299ba97a9d0

Aliases

arxiv: 1704.07697 · arxiv_version: 1704.07697v1 · doi: 10.48550/arxiv.1704.07697 · pith_short_12: NNNIBFOY7OXW · pith_short_16: NNNIBFOY7OXWFDGC · pith_short_8: NNNIBFOY

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/NNNIBFOY7OXWFDGCOB6CWO4D2I \
  | 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: 6b5a8095d8fbaf628cc2707c2b3b83d22e3183c5959d6eecf6deb299ba97a9d0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5f2184e290c476cd323775cffdd7359e5dfac7fcff15003a23dc9c06f0f754aa",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-04-25T13:55:09Z",
    "title_canon_sha256": "a06e0b634ce26c1a741b632a3ea72cc11166ecd113cc15b2d0e6754a3279a844"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.07697",
    "kind": "arxiv",
    "version": 1
  }
}