Pith Number

pith:U5WS2EXH

pith:2017:U5WS2EXHVR7YUISYUBBYOPA6V7

not attested not anchored not stored refs pending

What the Milky Way bulge reveals about the initial metallicity gradients in the disc

A. G\'omez, B. Semelin, F. Combes, F. Fragkoudi, M. Haywood, M. Schultheis, P. Di Matteo, S. Khoperskov

arxiv:1710.06864 v2 · 2017-10-18 · 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	2026-05-18T00:30:40.526173Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a76d2d12e7ac7f8a2258a043873c1eafc58caad92c9123bf92a91a06b68033a3

Aliases

arxiv: 1710.06864 · arxiv_version: 1710.06864v2 · doi: 10.48550/arxiv.1710.06864 · pith_short_12: U5WS2EXHVR7Y · pith_short_16: U5WS2EXHVR7YUISY · pith_short_8: U5WS2EXH

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/U5WS2EXHVR7YUISYUBBYOPA6V7 \
  | 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: a76d2d12e7ac7f8a2258a043873c1eafc58caad92c9123bf92a91a06b68033a3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c21c8359c19f16a35ac6a90f6fc52daef2b04c117783a449e4874d04f099fec6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-10-18T18:00:07Z",
    "title_canon_sha256": "5d5d914e9c30bd74765b8ea04405d74aae1856dec36a5456ce6536d958fa8874"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1710.06864",
    "kind": "arxiv",
    "version": 2
  }
}