Pith Number

pith:F7M7FB3F

pith:2015:F7M7FB3FWAZERSP4LMIHN5M4Y4

not attested not anchored not stored refs pending

The instantaneous radial growth rate of stellar discs

Filippo Fraternali, Gabriele Pezzulli, Juan Carlos Mu\~noz-Mateos, Samuel Boissier

arxiv:1505.03544 v1 · 2015-05-13 · 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	2026-05-18T02:09:53.792910Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2fd9f28765b03248c9fc5b1076f59cc719e7f4963bae72d8f86dee57a0dd384d

Aliases

arxiv: 1505.03544 · arxiv_version: 1505.03544v1 · doi: 10.48550/arxiv.1505.03544 · pith_short_12: F7M7FB3FWAZE · pith_short_16: F7M7FB3FWAZERSP4 · pith_short_8: F7M7FB3F

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/F7M7FB3FWAZERSP4LMIHN5M4Y4 \
  | 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: 2fd9f28765b03248c9fc5b1076f59cc719e7f4963bae72d8f86dee57a0dd384d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d6559e07fe7df154dea9633c83e9c598bf25f3938b4c0bccbb96636583fcf998",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-05-13T20:11:45Z",
    "title_canon_sha256": "db2fe64784c58b35b429738c2008161c44c72f83f768cf2add8eded3dc854590"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.03544",
    "kind": "arxiv",
    "version": 1
  }
}