María José Llergo (born 1994) is a Spanish singer. Biography Born in Pozoblanco, in 1994, Llergo joined the local violin school at a young age. She also stood out in the choir of the . Owing to bei
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 0xc343b8b2f165287bfa974e09b828d0f5239b8fcf02dc6be749d37156d1dd8591. 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/dc2770e7-02f8-42c9-84a7-b490f94ac618.json and https://artists.proofprofile.net/proofs/artist/dc2770e7-02f8-42c9-84a7-b490f94ac618.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 0xaa626b08f039f1fb1fbf18a6d53a6ed2ab002b4dcba5b9aac654ec5d5c0b6bc9. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/ES5021900677.
Nana Del Mediterráneo - Extended Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809656196aa1d524fbd137ea54acab2b4d81e19ff1d48ab86cb8e6f54e1441d5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ES5021901553.
Pena, Penita, Pena (Homenaje a Lola Flores)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc30f4a4d481db81b29001c079d56c7522680151b19af1dcf946b292b0a874460. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ES5022000780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f05db88ea4474279925f394aa9cb80d83344d70f9ac02f0d344b29362691d75. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/ES5022302050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9258b7f8fa0bc93998358aa0b57982df5650d02ba2d7d631e094d4ce92e9d78. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:24:48Z), 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/ES5022301620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288fc6142397afa7a92187c6027bc30ff4d6a44d1acb12da44859ee2058dbadb. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ES5022401675.
APRENDIENDO A VOLAR - Live at NPR's Tiny Desk
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3460c3f5b49f917a2f7b6f92f91a3b95b0802012ddda66ffbc2e1af8ca7be5fc. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/ES5022401676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a7c12b01ce4cf8622ca6ffb2b2617904a9599fb56bf85104b00b07e0a977e1f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ES5022401677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f444359fbdc8c9bfbabc650b6979aa8b821349f0faa12a97979c5a75eb642ee. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:01:01Z), 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/ES5022401840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c29b18452c9755e20aab547b62ba3c0c50199246f5a292a4f2abed55b567743. 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/ES71G1900982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4ed51af6399e7e0212a35d8f0587736b27e91f2d4503f3505cd0339984ee70. 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/ES71G1919069.