Pith Number

pith:ET5WJ2CG

pith:2008:ET5WJ2CGLWNGSYGHT3FV4Q7ZXY

not attested not anchored not stored refs pending

A Chandra X-ray view of Stephan's Quintet: Shocks and Star-formation

E. O'Sullivan, J.M. Vrtilek, L.P. David, S. Giacintucci, S. Raychaudhury

arxiv:0812.0383 v2 · 2008-12-01 · astro-ph

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	2026-05-18T04:29:24.788132Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

24fb64e8465d9a6960c79ecb5e43f9be1959358bdc677ca8ef47db82b35aca1c

Aliases

arxiv: 0812.0383 · arxiv_version: 0812.0383v2 · doi: 10.48550/arxiv.0812.0383 · pith_short_12: ET5WJ2CGLWNG · pith_short_16: ET5WJ2CGLWNGSYGH · pith_short_8: ET5WJ2CG

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/ET5WJ2CGLWNGSYGHT3FV4Q7ZXY \
  | 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: 24fb64e8465d9a6960c79ecb5e43f9be1959358bdc677ca8ef47db82b35aca1c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d49d91463d883223906dd1197816a290a31a6314909a953b230986f79c9bb328",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-12-01T22:38:59Z",
    "title_canon_sha256": "4d0d379ad3d05537c2583528806a89b1164c826c5162be6f9b15b7167a4b4db6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0812.0383",
    "kind": "arxiv",
    "version": 2
  }
}