Pith Number

pith:HYY3FA3L

pith:2009:HYY3FA3LW4A3HVLSVCVGDBGRCD

not attested not anchored not stored refs pending

Optical spectroscopy of the quiescent counterpart to EXO 0748-676

CfA), C.G. Bassa (SRON, D. Steeghs (Warwick, IMAPP), M.A.P. Torres (CfA), P.G. Jonker (SRON

arxiv:0907.2757 v1 · 2009-07-16 · astro-ph.HE

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	2026-05-18T02:13:02.525308Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3e31b2836bb701b3d572a8aa6184d110ec6c4b4a41391befb8e2192cd3c94a16

Aliases

arxiv: 0907.2757 · arxiv_version: 0907.2757v1 · doi: 10.48550/arxiv.0907.2757 · pith_short_12: HYY3FA3LW4A3 · pith_short_16: HYY3FA3LW4A3HVLS · pith_short_8: HYY3FA3L

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/HYY3FA3LW4A3HVLSVCVGDBGRCD \
  | 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: 3e31b2836bb701b3d572a8aa6184d110ec6c4b4a41391befb8e2192cd3c94a16

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fa98e2fea1310e79358e10f386c87ae2cf149d2a558eafd621080440a8d7dc7b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2009-07-16T06:37:39Z",
    "title_canon_sha256": "fd6a79d30669d636f5b08d66bd796200c667374cdd972b4d0ac7ff306c37a1b2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.2757",
    "kind": "arxiv",
    "version": 1
  }
}