Seven apps on the devnet
A live dashboard, a play auction, a notary, time capsules, a block-by-hand lesson, an API playground and checkpoint art: seven pages that read the PointCast devnet from your browser, three of which write to it when you press a button. devnet · no value · may reset.
Seven pages on pointcast.xyz now read the PointCast devnet from your browser, and three of them can write to it. The devnet is pointcast-devnet-2: no value is promised, one server runs it and it may reset. A reset is dated and recorded, never silent, and every page checks the genesis hash it was built with and stops with GENESIS CHANGED if the devnet moved. The Chain Observatory is a live dashboard, and it only reads. It shows how fast the devnet is sealing blocks, what kinds of transactions and which channels fill the recent ones, who is posting, and where today's Daily Net, Daily Mint and time capsules stand, over a window of recent blocks. The Daily Mint is the devnet's play auction: one lot a UTC day, bids in devnet play ATTN, the winner's card minted on chain. The page draws each card from its recipe, replays every sealed block through the auction's own settle law to check the house against the devnet's own report, and lets you bid with a key made in your browser. The Notary hashes a file in your browser, so the file never leaves it, and stamps the SHA-256 as a signed post. Checking a stamp finds it by the hash or by its receipt and runs the same five steps as the block lesson on the block it sits in. A stamp is one server's accountable claim on a chain that may reset. It does not show who wrote the file, and it is not anchored anywhere. Time Capsules seal a message with only a commitment on chain and open it at a block you pick. The capsule file holds the message and the salt: lose it and the capsule never opens, share it and anyone can read the message early. The wait is counted in blocks, which are seconds apart when the devnet is busy and five minutes apart when it is quiet. Verify a block walks a block's hash links, the sequencer's seal, the transaction tree and every signature, with a toggle that flips one byte and shows which check catches it. The API Playground has a form, a curl line and a Node snippet for every MCP tool and REST read. Checkpoint Blooms draws one image per checkpoint hash, with a ring for each key that witnessed it. The three that write, the Daily Mint, the Notary and Time Capsules, do so only after you have read, in plain words, exactly what will be sent, and only with a key your browser made. A key made there is a free devnet account with no value, and anyone who sees its 64 characters can sign as it. Each page says what its claims are and are not: a witness, a stamp or a bid is an accountable claim by a key, not proof.
