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api.carbon-cashmere.de x402 offerings

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45offerings
$0.03median USD/USDC cost (45 priced)
951 msmedian observed latency (45 tested)

Offering types

Api Endpoint: 45

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Observed health

Healthy: 45

Offerings

Showing 1–24 of 45

Curated Bitcoin coinbase scriptSig messages (printable ASCII only). Pool tags, BIP-comment campaigns, political statements. Window up to 7d.

Api EndpointBlockchain And CryptoHealthy · 316 ms0.02 USDC0.02 USDC · eip155:8453 · USDC0.02 USDC · eip155:137 · USDC0.02 USDC · eip155:42161 · USDC+4 additional payment options
https://api.carbon-cashmere.de/v1/btc-derivatives/coinbase-messages
Details

Latest TAO network-wide fundamentals: total issuance, total stake, free float, supply percentage mined, stake ratio. Snapshot every 10 min.

Api EndpointBlockchain And CryptoHealthy · 298 ms0.02 USDC0.02 USDC · eip155:8453 · USDC0.02 USDC · eip155:137 · USDC0.02 USDC · eip155:42161 · USDC+4 additional payment options
https://api.carbon-cashmere.de/v1/bittensor-derivatives/network-fundamentals
Details

Recent Kaspa blocks (max 144 blocks per call, flat price per call). Optional chain_only flag to filter selected-parent chain blocks. AI agent API for backtesters and indexers. Informational research data — not investment advice.

Api EndpointBlockchain And CryptoHealthy · 311 ms0.02 USDC0.02 USDC · eip155:8453 · USDC0.02 USDC · eip155:137 · USDC0.02 USDC · eip155:42161 · USDC+4 additional payment options
https://api.carbon-cashmere.de/v1/kaspa-derivatives/recent-blocks
Details

Kaspa mempool transaction count over time. AI agent API for mempool-state regime detection. Informational research data — not investment advice.

Api EndpointBlockchain And CryptoHealthy · 296 ms0.02 USDC0.02 USDC · eip155:8453 · USDC0.02 USDC · eip155:137 · USDC0.02 USDC · eip155:42161 · USDC+4 additional payment options
https://api.carbon-cashmere.de/v1/kaspa-derivatives/mempool-pulse
Details

Bulk Bitcoin block extract (max 144 blocks per call, flat price per call). Returns array of per-block summaries (height, time, miner pool, tx count, witness/taproot/ordinals/op_return stats, total output, coinbase reward).

Api EndpointBlockchain And CryptoHealthy · 314 ms0.02 USDC0.02 USDC · eip155:8453 · USDC0.02 USDC · eip155:137 · USDC0.02 USDC · eip155:42161 · USDC+4 additional payment options
https://api.carbon-cashmere.de/v1/btc-derivatives/blocks-range
Details

Single Kaspa block extract with full DAG topology (parents, selected-parent, blue/daa score, chain-block flag). AI agent API for DAG-aware indexers. Informational research data — not investment advice.

Api EndpointBlockchain And CryptoHealthy · 288 ms0.02 USDC0.02 USDC · eip155:8453 · USDC0.02 USDC · eip155:137 · USDC0.02 USDC · eip155:42161 · USDC+4 additional payment options
https://api.carbon-cashmere.de/v1/kaspa-derivatives/blocks/:block_hash
Details

Kaspa Toccata hardfork tracker: live activation distance, network-measured ETA, post-fork parameter reference. First-mover fork analytics from direct network measurement. Informational research data — not investment advice.

Api EndpointBlockchain And CryptoHealthy · 295 ms0.05 USDC0.05 USDC · eip155:8453 · USDC0.05 USDC · eip155:137 · USDC0.05 USDC · eip155:42161 · USDC+4 additional payment options
https://api.carbon-cashmere.de/v1/kaspa-derivatives/toccata-status
Details

Bittensor NeuronRegistered count per hour. Tracks new neurons joining subnets — useful for detecting subnet growth/decay and registration-burn pressure. AI agent API for subnet-health analysts. Informational research data — not investment advice.

Api EndpointBlockchain And CryptoHealthy · 311 ms0.03 USDC0.03 USDC · eip155:8453 · USDC0.03 USDC · eip155:137 · USDC0.03 USDC · eip155:42161 · USDC+4 additional payment options
https://api.carbon-cashmere.de/v1/subtensor-derivatives/registration-pulse
Details

Filtered Bittensor substrate event stream from finalized blocks. Module/event filters supported. Read from the public Bittensor (Finney) RPC and archived, so events stay queryable after public lite nodes prune them.

Api EndpointBlockchain And CryptoHealthy · 292 ms0.03 USDC0.03 USDC · eip155:8453 · USDC0.03 USDC · eip155:137 · USDC0.03 USDC · eip155:42161 · USDC+4 additional payment options
https://api.carbon-cashmere.de/v1/subtensor-derivatives/event-stream
Details

Kaspa circulating supply over time + emission rate + percent-mined. Captures accelerating geometric halving schedule. AI agent API for tokenomics tracking and supply-emission models. Informational research data — not investment advice.

Api EndpointBlockchain And CryptoHealthy · 294 ms0.03 USDC0.03 USDC · eip155:8453 · USDC0.03 USDC · eip155:137 · USDC0.03 USDC · eip155:42161 · USDC+4 additional payment options
https://api.carbon-cashmere.de/v1/kaspa-derivatives/supply-trend
Details

Hourly Bitcoin Coin Days Destroyed proxy (consolidation_ratio × fee_weight × volume) + whale-tx contribution. ⚠️ PROXY methodology — suitable for trend signals, not absolute reserve-coin-age accounting.

Api EndpointBlockchain And CryptoHealthy · 1170 ms0.03 USDC0.03 USDC · eip155:8453 · USDC0.03 USDC · eip155:137 · USDC0.03 USDC · eip155:42161 · USDC+4 additional payment options
https://api.carbon-cashmere.de/v1/btc-derivatives/coin-days-destroyed
Details

Bitcoin mining-pool hashrate share derived from coinbase scriptSig parsing. Returns block-count + share % per pool for window (1h/24h/7d/30d), with explicit Unknown bucket for long-tail small pools.

Api EndpointBlockchain And CryptoHealthy · 1194 ms0.03 USDC0.03 USDC · eip155:8453 · USDC0.03 USDC · eip155:137 · USDC0.03 USDC · eip155:42161 · USDC+4 additional payment options
https://api.carbon-cashmere.de/v1/btc-derivatives/miner-attribution
Details

Kaspa live fee market: priority/normal/low feerate buckets from the fee estimate of the public Kaspa node REST observer (api.kaspa.org). Informational research data — not investment advice.

Api EndpointBlockchain And CryptoHealthy · 312 ms0.03 USDC0.03 USDC · eip155:8453 · USDC0.03 USDC · eip155:137 · USDC0.03 USDC · eip155:42161 · USDC+4 additional payment options
https://api.carbon-cashmere.de/v1/kaspa-derivatives/fee-estimate
Details

Kaspa BlockDAG topology snapshot: tips, sink, virtual chain, pruning point, blue scores. For DAG-state monitoring, side-branch detection, sync verification.

Api EndpointBlockchain And CryptoHealthy · 314 ms0.02 USDC0.02 USDC · eip155:8453 · USDC0.02 USDC · eip155:137 · USDC0.02 USDC · eip155:42161 · USDC+4 additional payment options
https://api.carbon-cashmere.de/v1/kaspa-derivatives/dag-state
Details

Deep per-block Bitcoin extract. Returns miner-pool attribution, witness/taproot adoption %, Ordinals inscription count, OP_RETURN byte volume, fee percentiles (10/25/50/75/90), UTXO delta, segwit %, total output BTC, block weight.

Api EndpointBlockchain And CryptoHealthy · 1145 ms0.02 USDC0.02 USDC · eip155:8453 · USDC0.02 USDC · eip155:137 · USDC0.02 USDC · eip155:42161 · USDC+4 additional payment options
https://api.carbon-cashmere.de/v1/btc-derivatives/blocks/:height
Details

Bitcoin own-node peer-network diversity (IPv4/IPv6/Tor/I2P/CJDNS distribution) + privacy share. AI agent API for privacy researchers, node-operator tooling, network-health analytics. Informational research data — not investment advice.

Api EndpointBlockchain And CryptoHealthy · 292 ms0.02 USDC0.02 USDC · eip155:8453 · USDC0.02 USDC · eip155:137 · USDC0.02 USDC · eip155:42161 · USDC+4 additional payment options
https://api.carbon-cashmere.de/v1/btc-derivatives/diversity
Details

Bitcoin smart-fee curve for 1/3/6/12/24/144-block confirmation targets + trend classification (rising/stable/falling/surging) from 2h moving average.

Api EndpointBlockchain And CryptoHealthy · 293 ms0.02 USDC0.02 USDC · eip155:8453 · USDC0.02 USDC · eip155:137 · USDC0.02 USDC · eip155:42161 · USDC+4 additional payment options
https://api.carbon-cashmere.de/v1/btc-derivatives/fee-curve
Details

Bitcoin mempool pressure classification (low/medium/high/extreme) + fee buckets (0-1, 1-2, 2-5, 5-10, 10-20, 20-50, 50-100, 100-200, 200+ sat/vB) + RBF count + CPFP candidate count. Updated every 5 min.

Api EndpointBlockchain And CryptoHealthy · 1209 ms0.02 USDC0.02 USDC · eip155:8453 · USDC0.02 USDC · eip155:137 · USDC0.02 USDC · eip155:42161 · USDC+4 additional payment options
https://api.carbon-cashmere.de/v1/btc-derivatives/mempool-pressure
Details

Hourly Bitcoin Ordinals inscriptions + OP_RETURN byte volume. Inscriptions detected via witness-envelope magic bytes ( c ord). Window up to 7d.

Api EndpointBlockchain And CryptoHealthy · 1372 ms0.02 USDC0.02 USDC · eip155:8453 · USDC0.02 USDC · eip155:137 · USDC0.02 USDC · eip155:42161 · USDC+4 additional payment options
https://api.carbon-cashmere.de/v1/btc-derivatives/ordinals-flow
Details

Hourly Bittensor subnet registration activity (NeuronRegistered event count per subnet) + current burn-cost per subnet. Useful for predicting cheap-registration windows.

Api EndpointBlockchain And CryptoHealthy · 311 ms0.02 USDC0.02 USDC · eip155:8453 · USDC0.02 USDC · eip155:137 · USDC0.02 USDC · eip155:42161 · USDC+4 additional payment options
https://api.carbon-cashmere.de/v1/bittensor-derivatives/registration-cost-history
Details

Hourly emission and stake trend for a Bittensor subnet (window: 1h/24h/7d/30d). Derived from bittensor_metagraph snapshots. AI agent API for subnet-momentum tracking. Informational research data — not investment advice.

Api EndpointBlockchain And CryptoHealthy · 298 ms0.02 USDC0.02 USDC · eip155:8453 · USDC0.02 USDC · eip155:137 · USDC0.02 USDC · eip155:42161 · USDC+4 additional payment options
https://api.carbon-cashmere.de/v1/bittensor-derivatives/subnet/:netuid/emission-trend
Details

Time-series of alpha-token price for a single Bittensor subnet (window: 1h/24h/7d/30d). Sourced from bittensor_alpha_prices captured every 10 minutes. AI agent API for alpha-token trading signals. Informational research data — not investment advice.

Api EndpointBlockchain And CryptoHealthy · 311 ms0.02 USDC0.02 USDC · eip155:8453 · USDC0.02 USDC · eip155:137 · USDC0.02 USDC · eip155:42161 · USDC+4 additional payment options
https://api.carbon-cashmere.de/v1/bittensor-derivatives/alpha-price-history/:netuid
Details

Latest alpha-token price per Bittensor subnet (TAO + USD). All 129 subnets in one call. AI agent API for cross-subnet price arbitrage, dTAO portfolio rebalancing. Informational research data — not investment advice.

Api EndpointBlockchain And CryptoHealthy · 296 ms0.02 USDC0.02 USDC · eip155:8453 · USDC0.02 USDC · eip155:137 · USDC0.02 USDC · eip155:42161 · USDC+4 additional payment options
https://api.carbon-cashmere.de/v1/bittensor-derivatives/alpha-prices
Details

All Bittensor substrate events for a single finalized block (event_idx, phase, module_id, event_id, attributes). AI agent API for detailed forensic analysis of specific blocks. Informational research data — not investment advice.

Api EndpointBlockchain And CryptoHealthy · 313 ms0.02 USDC0.02 USDC · eip155:8453 · USDC0.02 USDC · eip155:137 · USDC0.02 USDC · eip155:42161 · USDC+4 additional payment options
https://api.carbon-cashmere.de/v1/subtensor-derivatives/events/:block_number
Details