Marta Sánchez Gómez (born 28 June 2000), better known as Marta Sango, is a Spanish singer who rose to fame after her participation in the program Operación Triunfo 2018. Biography She was born on 2
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 0xba1ea3dc8cd5481381e785be7a137cca48e598e0eb1b74bb4c9e3767ba5e1a82. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/86ca8b72-d34b-40e2-a5a2-dcb79573e7af.json and https://artists.proofprofile.net/proofs/artist/86ca8b72-d34b-40e2-a5a2-dcb79573e7af.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 0xc99dd4abb95c74eb5219fd0fdcdb122f8e0db066453efdadb659448ba942293f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES5701800960.
Just Give Me A Reason (Operación Triunfo 2018)
Just Give Me A Reason - Operación Triunfo 2018
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd874bacf91e84354738fae7cc60a2dc1bb94db214d91632009428a80f11c0bd2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES5701801099.
Lo Echamos A Suertes (Operación Triunfo 2018)
Lo Echamos A Suertes - Operación Triunfo 2018
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf4b4906c0483f5c9147325a7997b360d5eed3a3d57adbf08282a2f0e3aae6f1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES5701801122.
Y Nos Dieron Las Diez (Operación Triunfo 2018)
I Want To Know What Love Is (Operación Triunfo 2018)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fdb591a62803d6236d26bd7c045a1519e7ccceda6dbccb88bcae78cc4ccb873. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:43:27Z), 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/ES5701801317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79deebf9c37af5d06407fcdf62f40b35edcf88828abeea1b69f8fb523c85ba16. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ES5701801351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583a6288aa34a5075adc7085f999b776730362b9c0160991b2a558d74bc8bb05. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ES5701901650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x376a88050ea1d11f534de1173d0367a0b44a3bea93612276b809731dc114d325. 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/ES5052000436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c6bb1ee9aeace9cdf6143c417bb8a43dc20ea8bbb6d267c19881473bc641608. 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/QZMEQ2284857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa83befabe1959040e74cd94ebc0a6b571b4ff66367f42cf38e73cb8c4f1421f. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/USA2P2330689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0694bd1ffbc40053ff62f47d263d0af181bc7d1eefabb614d956cbe27cb3743e. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/USA2P2344069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99dd4abb95c74eb5219fd0fdcdb122f8e0db066453efdadb659448ba942293f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ES5701800960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7051de02beda3d5f6682e635fba7d791659e9d8a14a862bb14e57615338d329. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ES5701801226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b34800611c07fd8580ab275d529eb432ab2cf99979e25ddb876d088b906f630. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BK4DA2413939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf4b4906c0483f5c9147325a7997b360d5eed3a3d57adbf08282a2f0e3aae6f1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES5701801122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd874bacf91e84354738fae7cc60a2dc1bb94db214d91632009428a80f11c0bd2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES5701801099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd874bacf91e84354738fae7cc60a2dc1bb94db214d91632009428a80f11c0bd2. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/ES5701801099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7051de02beda3d5f6682e635fba7d791659e9d8a14a862bb14e57615338d329. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ES5701801226.