Pith Number

pith:STVYYZKM

pith:2009:STVYYZKMXD4IQECXHWXVRFMCPS

not attested not anchored not stored refs pending

On the survival of metallicity gradients to major dry-mergers

A. Pipino, B. Semelin, F. Combes, M. D. Lehnert, P. Di Matteo

arxiv:0903.2846 v1 · 2009-03-16 · 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	2026-05-18T02:14:27.933178Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

94eb8c654cb8f88810573daf5895827c937009abc3120201d6302e51ee75dde7

Aliases

arxiv: 0903.2846 · arxiv_version: 0903.2846v1 · doi: 10.48550/arxiv.0903.2846 · pith_short_12: STVYYZKMXD4I · pith_short_16: STVYYZKMXD4IQECX · pith_short_8: STVYYZKM

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/STVYYZKMXD4IQECXHWXVRFMCPS \
  | 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: 94eb8c654cb8f88810573daf5895827c937009abc3120201d6302e51ee75dde7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d1a2cf875c331cb7968fe59a47ccb237d8e00bb7d64199fffce76f1b46e6add8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-03-16T20:15:19Z",
    "title_canon_sha256": "65e218948ff7a8eb0ace11160ad30ee7e7539db372b2a2b255fa804d3272ebff"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.2846",
    "kind": "arxiv",
    "version": 1
  }
}