Pith Number

pith:HEHNUILR

pith:2012:HEHNUILRCL7ALPKCILVTVDCO3R

not attested not anchored not stored refs pending

Evolution of Galactic Discs: Multiple Patterns, Radial Migration and Disc Outskirts

A. C. Quillen, B. Famaey, F. Combes, I. Minchev, J. Bland-Hawthorn, M. Vlajic, P. Di Matteo, P. Erwin

arxiv:1203.2621 v2 · 2012-03-12 · astro-ph.GA · 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	2026-05-18T01:58:09.716958Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

390eda217112fe05bd4242eb3a8c4edc60b1809b0a058fbbb44608646d742fdd

Aliases

arxiv: 1203.2621 · arxiv_version: 1203.2621v2 · doi: 10.48550/arxiv.1203.2621 · pith_short_12: HEHNUILRCL7A · pith_short_16: HEHNUILRCL7ALPKC · pith_short_8: HEHNUILR

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/HEHNUILRCL7ALPKCILVTVDCO3R \
  | 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: 390eda217112fe05bd4242eb3a8c4edc60b1809b0a058fbbb44608646d742fdd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e98c40cc13a991f0603fd19b7891361328c6305d9641f7860632a3129fce5b63",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2012-03-12T20:00:09Z",
    "title_canon_sha256": "c94ebf04c297f92a11aec5e84b0786e246ef79fe4a5100609cfedce75115d713"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.2621",
    "kind": "arxiv",
    "version": 2
  }
}