José de Rico (full name José Manuel León Hierro born in Barcelona, Spain in 1982) is a Spanish DJ, producer and songwriter. Biography He worked in the Spanish electronic and dance music station Loc
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 0xdc32ff71e39ca781227a0a08de103c80f4fd5124eaf1941816b9c62d49969aa7. 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/b53d8198-ebe3-4a7d-bc30-83947a8a996e.json and https://artists.proofprofile.net/proofs/artist/b53d8198-ebe3-4a7d-bc30-83947a8a996e.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 0x327a266a35446bfc5ec45de0fa0fe8b6fa36b30bf58dfe74b3f1ce199c420cc0. 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/ES31G2100701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec756f5d6a4284d7a15a7577ab971a3ae249de15e1263a1c8bd8bde275a526ba. 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/ESUM72301350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe03f968baf28d0e0974201690d56c247ba7ef1753cde7352df12c3660d981c3. 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/BK4DA2456395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71459cf9ae6aa823f6117c551a3cca3d7e4dbd3ca6e3a3aaa03d98495dab20d. 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/ESUM72500142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84e1a0534fc850f2adeb7655365025845a48fcda0e10b5cdc4c98cc1fcfaeeda. 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/ES71G2407535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10cd5b5f4c9a2f79824d01451f3d075d245bb618179278522f60b3fbf52ef36e. 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/ES31G2000601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b00f5def6eb878cc56f25526615c4b824cbb71cc219fe86b6669e2e7db7e370. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRX201700305.
Que Te Aguante Otro (feat. Fito Blanko & D'William)
Mas Que una Amiga (feat. Adrian Rodriguez)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x363e0d0166466f5d4c872224417cc576b282c63b819729707f044567f50859f6. 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/ES31G1500301.
Soltera (feat. Danny Romero & Fito Blanko)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47231cc1f8c2e1d034ca849cbdc393c037bf8c70e78cb05f62d06f59faa89ba3. 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/ES31G1401001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28dac73bbe751f30620f9ede67466c7053dd885c5d1a753f55a0fb345a32fe3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES31G1300401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f21caf70584ab0f8d5b07eef76ac3305bcd76162031dc1aec80deb7996b737. 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/ES1611200149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80dcc56399089438cc55f84b556d2c08c091d6d12137ee8882590d22469c3959. 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/ES1611200139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe5de35c54b871e4b0819986326dc0ada2ccef32f02af39650f09eb610df8d3. 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/ES1611200138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c36e99f9440aa0bcc113750af76d8e3bf8a200b03083736e4d7254a101fe6b. 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/ES1611100119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ef1929a7c0c367990dc841b040895d24e88fee099ccb57ababdc7ef137a04e. 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/ES1611100061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x606f112e73a7bfb3894ce948df5b10f47982823ae9c9fe46321a8cfbb5c4e1a3. 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/ES1611100062.
Vive el Momento (Saga WhiteBlack Remix) (feat. Jose De Rico)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0360aee73235cca6a945ae0efb3c48995c90a5f47bade034c42303f54338755. 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/ES5021500692.