Pith Number

pith:BJDWWCC6

pith:2007:BJDWWCC6HHBVTOCS5N2JNOOGZI

not attested not anchored not stored refs pending

Origin of the Ocean on the Earth: Early Evolution of Water D/H in a Hydrogen-rich Atmosphere

Hidenori Genda, Masahiro Ikoma

arxiv:0709.2025 v1 · 2007-09-13 · astro-ph · physics.ao-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{BJDWWCC6HHBVTOCS5N2JNOOGZI}

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	2026-05-18T02:35:30.401954Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0a476b085e39c359b852eb7496b9c6ca357693b9b958b440a4155ad18e5770c0

Aliases

arxiv: 0709.2025 · arxiv_version: 0709.2025v1 · doi: 10.48550/arxiv.0709.2025 · pith_short_12: BJDWWCC6HHBV · pith_short_16: BJDWWCC6HHBVTOCS · pith_short_8: BJDWWCC6

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/BJDWWCC6HHBVTOCS5N2JNOOGZI \
  | 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: 0a476b085e39c359b852eb7496b9c6ca357693b9b958b440a4155ad18e5770c0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3103250c22d5bfe77ca7ad3b5b9d767fbf6657329569c9335baed2bc8fff87bc",
    "cross_cats_sorted": [
      "physics.ao-ph"
    ],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-09-13T09:09:23Z",
    "title_canon_sha256": "edde94d4a634196e2e79058837b2951411b40c51e9ee199b70490395a19b780a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0709.2025",
    "kind": "arxiv",
    "version": 1
  }
}