Pith Number

pith:Q453X6KI

pith:2016:Q453X6KIUUHFFRVDKCWMMQJKYR

not attested not anchored not stored refs pending

When the Milky Way turned off the lights: APOGEE provides evidence of star formation quenching in our Galaxy

A. Gomez, D. Katz, M. D. Lehnert, M. Haywood, M. Schultheis, O. Snaith, P. Di Matteo

arxiv:1601.03042 v2 · 2016-01-12 · 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	2026-05-18T01:12:37.853008Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

873bbbf948a50e52c6a350acc6412ac44ae230dbdff47cfb47027b176464ae54

Aliases

arxiv: 1601.03042 · arxiv_version: 1601.03042v2 · doi: 10.48550/arxiv.1601.03042 · pith_short_12: Q453X6KIUUHF · pith_short_16: Q453X6KIUUHFFRVD · pith_short_8: Q453X6KI

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/Q453X6KIUUHFFRVDKCWMMQJKYR \
  | 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: 873bbbf948a50e52c6a350acc6412ac44ae230dbdff47cfb47027b176464ae54

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f6c6eff464f9936622d43bd3ba9a397a1a74e3c7e7c16c7e2eb294ad4884104f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2016-01-12T21:00:01Z",
    "title_canon_sha256": "f1746e01ec3f44faf0f4e3868228b6e2ac225c1b27e1b14704efd97fc82c9482"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1601.03042",
    "kind": "arxiv",
    "version": 2
  }
}