Marta Soto (born 15 November 1996) is a Spanish singer and songwriter. She is mostly known for her song "Quiero Verte", which made an appearance on the Spanish television program Survivor, and for her
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 0xaea5ffe6b4f43686a487266dc15a083f82303a8b0688312e199c784343379d4f. 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/3e9088cd-d675-405e-82bc-87a6198b1c5f.json and https://artists.proofprofile.net/proofs/artist/3e9088cd-d675-405e-82bc-87a6198b1c5f.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 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 0x51927e2b7ebc680ba3c29f997c835b5a36af023d80d4da3fa6272c3304bdf040. 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/ES5151700999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac47553c2d0f56158592bd59b087c61662cbb415ba97f29dd43b90d534b460c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ES5151701000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e24ceb3687688de4373a2bd3547e9e7c2a1ac3bc37162a73db955c47313d3c. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/ES5151701938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c32af2105b6e734771047d6bf21f1782724e65780385048565cf77ea5fd579c. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/ES5151801841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812a1d086769efecfe519fd6774f83829b540927d342a94f96a4a1164ff6ab94. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/ES5151801843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4881b408aac3e7a1e859e5f690be92c396478b777e18fc8d184ccc035022d477. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:44:04Z), 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/ES5151801844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1637e317d0dbcc236ccb4473c02fc85e75242bb745b67565cfd966dacfcb5453. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/ES5151801842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb79c3139805126ee1fe9f8acf4b35528e13abb2584e640ea0a14411e51985c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ES5151801846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5409a501257adca2b47f3a545cacd7d2697b946034dbf628e69b57f3012ffb27. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/ES5151900126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac47553c2d0f56158592bd59b087c61662cbb415ba97f29dd43b90d534b460c. 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/ES5151701000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x869ea556724409ed94c9fda71296c80e023b2c65b160b3267c026edd3304f8f3. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:06:38Z), 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/ES5151900130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a826da0bb487dc905e820251d04e4a8db4127b3a236d1d1baa1608700496c37. 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/ES5151701939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802b0db99ca8d3a6b6abd7a96ac2997a987d4011b296031c7967272dc69889e1. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:27:21Z), 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/ES5151801856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9e8deb3bb354b4cecc30055f69ebdab7ddf058dcda78f1cf3aa7caefd80590. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T11:19:23Z), 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/ES5151801857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4674cf0c80d39be893d0570d12321fe9288671b10be4ff6d720230bd76dcdbe. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ES5151801858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d0b06cffe57dd997b59ed4ac0efb6528ef5f5c5378f39fe34fd39399b2baa10. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/ES5151801859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca16eba6609deb1899f7d47f7c75f96cda13e4a62bf7946b23d72622131bae3d. 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/ES5151900597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c88c014c3beb1ab5dec12f557623ae91fac37f6f035018e5b8c48c8ea8f5d6. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/ES5152000216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c2d6ce62a7e2f0e056cc4a2f834f1e0ca7e25207e3ce89ec4b4340c0416286. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T01:02:29Z), 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/ES5152000277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ad77252cbb430b5098288c03afb4cd286029a6204e860ba619afb254caf34d. 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/ES5152000718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d69ddf3e66dfac28f5c5dc8fdf12b82defcbf49618ae248318c46ae278cd2f. 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/ES5152001072.
Me crecen las flores (feat. Bely Basarte)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d732394470fb2cfb080ecf28dabbf1a785e06032f2f083f518725d37e9e5711. Chain 2 (Bitcoin): anchored in block 958613 (2026-07-18T21:35:09Z), 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/ES5152100701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fdca00faeff78d0d82e4b8e22d740014be70719068c4d8658ecb47cc00e7024. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), 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/ES5152200053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b84a71aa7c5a9f737260e21d4211b5a34581fa5951518af17eda87a3f7da06c. 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/ES5152200262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fdca00faeff78d0d82e4b8e22d740014be70719068c4d8658ecb47cc00e7024. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:10:54Z), 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/ES5152200053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22454d030871c245b13f386cffc57e4ab09d415235449f0ab9f0ef27a70d3b70. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:13:56Z), 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/ES5152101189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c6f36357b7ec48456f6d0098a56b2bafe97907f444ff8c15ab5fef8d81f025. 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/ES5152200263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x496e4e44597b42c6a34fde6c09a3612a8df4917a18e0dfefb75431c890d3e04c. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ES5152100358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4457c64362fdb6448407efdd6b44a1a963156028dc23a75cb6b280ce29d97ad3. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:42:16Z), 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/ES5152200264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41537d4897022f3d44f7bed42a3d3f9917e8e3858c0d5e6264797a62c204407a. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/ES5152200265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39b610cedf05c2e79cd2e55d9cf2be9caac800e3f0387e21b44f4d3b6262e37a. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/ES5152400137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbffb8ebc01167aed6851b12af00bff961e89451276031f04395cc28dc8036f7. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/ES5152400388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e94b6469064d33c8a4573b7432347e1364f823229c14704438fecdc8cc452a. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/ES5152400574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1a9ca6aa644f80c6da7caf35d1c78fb713e3772156f6ae67248876ec53acc1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ES5152400983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50091413a1fc185fa078faba10d5686095591586307a85e20d766bc580e21d65. 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/ES5152000388.
Por si regresas (feat. Dani Fernandez) - Acústico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ed82e80ae5cf86d1f229dfa3aa6aa59f45a03aa5998eea1d7e71bcf3f71a5b. 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/ES5152001009.
No te pido que vuelvas (feat. Marta Soto) - Acústica
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2475c6462254f41e98814ae64fcd4cb627e3e1aba12b5822162ead8cf7c9eb25. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ES5151901609.
No te pido que vuelvas (feat. Marta Soto) [Acústica]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2475c6462254f41e98814ae64fcd4cb627e3e1aba12b5822162ead8cf7c9eb25. 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/ES5151901609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9147e27d8fbd296fb3253c1b8e9c33928a2ed8c764bdd7e551b0352ec5a140f. 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/USA2P2112338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a7eae01f772dd192f6b46985d51fa793e6f527610fac07e4a7957707d6c0a8. 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/ES5152000538.