David de Miguel-Lapiedra (born 7 February 1965) is a Spanish former professional tennis player.ITF Pro Circuit Profile Career De Miguel had a good year as a junior in 1983, when he was an Orange Bowl
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e124a0d30eb7c927300c91b6fee81ecd6007b18e5565ba5ce43a2a0f407cf9. Chain 2 (Bitcoin): anchored in block 953772 (2026-06-15T10:33:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c7b20d5e-1205-446a-8c8c-40f407ec96c3.json and https://artists.proofprofile.net/proofs/artist/c7b20d5e-1205-446a-8c8c-40f407ec96c3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Reminiscence (Theme by Johannes Bornlöf)
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160b64732993e3dfdeeced92f026cc3710b8b0b7674203c14f8d68d5dd12275a. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBMJG1716386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38cc05e6d3e9b14cb256e123eec5cd5b819ebc9d6f27487ac7a050e67e4cdf8f. Chain 2 (Bitcoin): anchored in block 958647 (2026-07-19T02:36:14Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBMJG1714700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e9aa6313e25c7a3b9a6a62d718f101878e52f53172badf4f476d26c924af70. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T13:04:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES7431605102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67a20e4a2429364c481456b3168edf14e74e50629f1ffd35c078703fba9122a. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBMJG2109234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c695ebd2edcca0af076104c2c7a6c385936fb01974cc0439acde450b8374d2. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLPF0113921.
Light of the Seven (from Game of Thrones)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec635a0d77771719a83a0cdea3afff440f6312981c2744f5199a420eb3e7c053. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLPF0086277.