Pith Number

pith:EEQ6FYJG

pith:2007:EEQ6FYJGBG4SRIO2RUUTUOPXDP

not attested not anchored not stored refs pending

The Spectrum of the Black Hole X-ray Nova V404 Cygni in Quiescence as Measured by XMM-Newton

A.K.H. Kong, C.A. Haswell, C.K. Bradley, E. Gallo, J. Casares, R.I. Hynes

arxiv:0706.2652 v1 · 2007-06-18 · astro-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EEQ6FYJGBG4SRIO2RUUTUOPXDP}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

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	2026-05-18T04:29:33.891926Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2121e2e12609b928a1da8d293a39f71bf428d11f574066003b0e245918d98c68

Aliases

arxiv: 0706.2652 · arxiv_version: 0706.2652v1 · doi: 10.48550/arxiv.0706.2652 · pith_short_12: EEQ6FYJGBG4S · pith_short_16: EEQ6FYJGBG4SRIO2 · pith_short_8: EEQ6FYJG

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/EEQ6FYJGBG4SRIO2RUUTUOPXDP \
  | 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: 2121e2e12609b928a1da8d293a39f71bf428d11f574066003b0e245918d98c68

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8f178a2130f9557db06a85d1972dd5c489731f5626adb1d8212841f59fe37a8b",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-06-18T20:31:13Z",
    "title_canon_sha256": "93566dfb56afc40c0f7b86f97f4e914b6908b791cbd2baf817d2194dbd0e83d0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0706.2652",
    "kind": "arxiv",
    "version": 1
  }
}