Orgchain v1.5: beats pay the holding, and test BTC moves down the tree

Each beat pays its 50 test BTC block reward to the holding being worked in, at
its SegWit (BIP-84) address. Send moves test BTC between active nodes of a
holding, signed by the sender's BIP-84 key, with the toy chain's 500-sat fee:
at most two coins in and one block reward out. Sends land like acts, and Beat
now mines a beat even when nothing is cued. A graduation moves each re-keyed
node's money to its new address with its inscription. Balances follow the
slider, the timeline lists every reward and send, and Inspect shows exact
amounts and the raw transaction. The sample passes some of yolopreneur's
rewards down its tree.

The engine's one local change: the toy chain also takes P2WPKH outputs and
SIGHASH_ALL P2WPKH spends (BIP-143), in src/adapters/chain.js. Super
Testnet's tests pass unchanged; tests/money.test.js covers the rest.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01H4upF5LVwmPDDqrhdUfnXh

PROVENANCE.md

@@ -13,13 +13,15 @@ The upstream CC0 legal text is retained unchanged at [`public/licenses/supertest
 
 Runtime dependencies are pinned in `package.json` and `package-lock.json`:
 
-- **@cmdcode/tapscript 1.5.3**, Christopher Scott, [upstream](https://github.com/cmdruid/tapscript), CC-BY-1.0. Used for transaction encoding, signing/verification, Taproot commitments and addresses. Installed package license retained unchanged at [`public/licenses/tapscript.txt`](public/licenses/tapscript.txt). Library source is unmodified; Vite bundles/minifies it for the browser.
-- **@noble/curves 1.9.7**, Paul Miller and contributors, [upstream](https://github.com/paulmillr/noble-curves), MIT. Used for key generation/validation and public keys: secp256k1 for chain and nostr keys, Ed25519 and X25519 for lineage's leaves. License retained at [`public/licenses/noble-curves.txt`](public/licenses/noble-curves.txt).
-- **@noble/hashes 1.8.0**, Paul Miller and contributors, [upstream](https://github.com/paulmillr/noble-hashes), MIT. Used for synthetic block hashes, BIP-85's HMAC and the leaves' HKDF-SHA256. License retained at [`public/licenses/noble-hashes.txt`](public/licenses/noble-hashes.txt).
+- **@cmdcode/tapscript 1.5.3**, Christopher Scott, [upstream](https://github.com/cmdruid/tapscript), CC-BY-1.0. Used for transaction encoding, signing/verification, Taproot commitments and addresses, and the BIP-143 digests and signatures of SegWit payments. Installed package license retained unchanged at [`public/licenses/tapscript.txt`](public/licenses/tapscript.txt). Library source is unmodified; Vite bundles/minifies it for the browser.
+- **@noble/curves 1.9.7**, Paul Miller and contributors, [upstream](https://github.com/paulmillr/noble-curves), MIT. Used for key generation/validation and public keys, and to verify the low-S DER signatures of SegWit payments: secp256k1 for chain and nostr keys, Ed25519 and X25519 for lineage's leaves. License retained at [`public/licenses/noble-curves.txt`](public/licenses/noble-curves.txt).
+- **@noble/hashes 1.8.0**, Paul Miller and contributors, [upstream](https://github.com/paulmillr/noble-hashes), MIT. Used for synthetic block hashes, BIP-85's HMAC, the leaves' HKDF-SHA256 and the RIPEMD-160 of P2WPKH key hashes. License retained at [`public/licenses/noble-hashes.txt`](public/licenses/noble-hashes.txt).
 - **@scure/base 1.2.6**, Paul Miller, [upstream](https://github.com/paulmillr/scure-base), MIT. Used for bech32 npubs and base64 leaf keys. License retained at [`public/licenses/scure-base.txt`](public/licenses/scure-base.txt).
-- **@scure/bip32 1.7.0**, Patricio Palladino and Paul Miller, [upstream](https://github.com/paulmillr/scure-bip32), MIT. Used for HD derivation under the BIP-85, BIP-86 and NIP-06 paths. License retained at [`public/licenses/scure-bip32.txt`](public/licenses/scure-bip32.txt).
+- **@scure/bip32 1.7.0**, Patricio Palladino and Paul Miller, [upstream](https://github.com/paulmillr/scure-bip32), MIT. Used for HD derivation under the BIP-85, BIP-86, BIP-84 and NIP-06 paths. License retained at [`public/licenses/scure-bip32.txt`](public/licenses/scure-bip32.txt).
 - **@scure/bip39 1.6.0**, Patricio Palladino and Paul Miller, [upstream](https://github.com/paulmillr/scure-bip39), MIT. Used for the 24-word lab roots and their seeds. License retained at [`public/licenses/scure-bip39.txt`](public/licenses/scure-bip39.txt).
 
+One local change to the engine (Orgchain v1.5): `src/adapters/chain.js` also accepts native SegWit (P2WPKH) outputs and SIGHASH_ALL P2WPKH spends, verified per BIP-143, so lineage accounts can hold and send test BTC at their BIP-84 addresses. Everything about inscriptions stays Taproot-only. The change is original code, tested in `tests/money.test.js`; Super Testnet's tests (`tests/adapters.test.js`) pass unchanged.
+
 Vite and Playwright are build/test dependencies, not runtime network services. Their installed package notices remain in the locked dependency installation. No unlicensed upstream code was copied.
 
 The bounded JSON/CBOR codec, byte-derived MetadataIndex, trusted event-counter reducer, local API facade and persisted auto-miner schedule are original adapter code. Metadata encoding and endpoint naming were checked against the [Ordinals metadata](https://docs.ordinals.com/inscriptions/metadata.html) and [endpoint](https://docs.ordinals.com/inscriptions/recursion.html) references; no ord source code was copied.