Pablo Díaz-Reixa (born November 17, 1983), professionally known as El Guincho, is a Spanish musician, singer, and record producer. Díaz-Reixa rose to prominence with his 2008 album, Alegranza. His mu
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf86820bb477bba8e25ee1b0644d031e52fe1187a9a84b8a75a3c4effa9d0ec8. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6d01e4ea-f88c-4db3-a939-d6f30d265502.json and https://artists.proofprofile.net/proofs/artist/6d01e4ea-f88c-4db3-a939-d6f30d265502.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda00a17fef8b2e8d4619721a347c1f9780350f5e0d4a649f9e8e32fa81bb4a62. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMBZ92167842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b34b841d6a374df880551ae5e5215c40278677977f572eb7f32dd9613af199. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMBZ92167850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fafd133c9e7d25410f0289dce20f4c63916f80154538cce73b108260ddf962e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMBZ92166814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a33093ff5e22464d50f14361364de7931598f4cd2eacba08ffe5e2cee41143e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMBZ92166934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e53fe5b8e90d38d119ba94c80c9bc1838c0b958caa61e530804f116e567af6a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM7282198930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3705bfc2454d85aadc08a607cae775055d3b541530aec1598b105c63a76bc79d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMBZ92167136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x005602cd74487208041faeba4cea371666fe2c690e58fa511d6baaa83e915ab4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMBZ92167357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b92881a309f85d35ac85c49352d2630341dead7a8f75dcc0b9930bee6b53473. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMBZ92147105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2d0a3e3d96fb2b0e15fcba657a915282954b4985dbe6717f231d905ea4ca7d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMBZ92167520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf8c56b4ac4720b6f9c12fcabb8c7509bc06ab3c965f9c7bdb0b4170bbb81a72. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMBZ92167668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde868200c4df617ab6e5bf18b512fa4e164f2da0dbf86e496e162f0a8529b32f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMBZ92167765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38762e4a7b058c42570d31cbbee0035989c1cdcf93b018cf40fb8001e826318c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMBZ92167790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b92881a309f85d35ac85c49352d2630341dead7a8f75dcc0b9930bee6b53473. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMBZ92147105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e53fe5b8e90d38d119ba94c80c9bc1838c0b958caa61e530804f116e567af6a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM7282198930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf92a001a6f020a106c01fa9b82328e081855139c1979efbdce77090423ce2e9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSM11900950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed4e614579f4d58121cd616ce0f2463f0072e5c129334672b677020b791a1a8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZNWR2244070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec9fb49f31f902a86bacda409cb28d8074597cddc478a30e5737e1106040707. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES5702100594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381db5bc9a3dfa2438a633768cfba63e6121f549a0543286fd3e98e703a3c487. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUM72102146.