Sweet California is a Spanish girl group formed on 24 January 2013. The group currently consists of Sonia Gómez, Alba Reig and Tamara Nsue; former member Rocío Cabrera departed the group in February 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 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 0xbb65fe978149f7352dfa771871ea36c54b190aa2a5c3346a9d8b6cbf120f4aec. 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/ae1d08af-f1a6-4db4-9e9e-bca846a5fd1e.json and https://artists.proofprofile.net/proofs/artist/ae1d08af-f1a6-4db4-9e9e-bca846a5fd1e.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 0xb7e8ae1e0e205d4ebcc9e9be17a23d0e367dd17e9dac5e33c376599876fd8e75. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ES5151400859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21174519c6194384a56e2b90fa440c1dee69609b9003d7767f1c74f581d63339. 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/ES5151400863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6cd9453fd4e17ff22399c5a9043ec89eeb0c5ff79d2b711cd09620418615477. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/ES5151400861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80bae3e2d2a9e81140e2859b58a8d30669595417ba0ec885fd3a87ea2737c291. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/USWD11469654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dfffc9a939204da449c3f426d2d6055660154b16ba3f6f8833260e13eef7e5a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ES5151400800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1676db4af1249f02e02ba257ea46794ff11f3d243f132df2e09d7b000489e5. 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/ES5151301271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6cd9453fd4e17ff22399c5a9043ec89eeb0c5ff79d2b711cd09620418615477. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/ES5151400861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7840d34c9ae17d4845f1ccbd4aac0312809b92e632ace03092bcf7e554451db. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:34:01Z), 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/ES5151500360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeab870ed4c5cfe4db6f3a5d408efb68f80fcf740f3e15925a659388c385c2bc. 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/ES5151502452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd498f784b3981ec7f5ef3d1099fe4fe23190e3a8ccada9ba70f8333236c57958. 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/ES5151502681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf055996ac0b8efae841132ff6b7dc522045b4f7f57944b9ebab5eefed5abac44. 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/ES5151502690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337ab3da70426227e02fd8d04d1524e5ae9360f4d59afce66acc99ce01de9d6d. 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/ES5151502691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9151ad801ba7d9d9256cffd51f5ed634bebc7685724099deeb68852f51b602. 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/ES5151600498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee414ba432e9a851f05aff41981bc72b30b67c7d6385985e72d423e2aa40c76. 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/ES5151600567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63bd5eb43921ec5ab375c0b4c6d551f7c10b676761527ed21ba15e6e609fd54f. 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/ES5151600570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32948467c6337b989bf551b13c83733dd892af891f71e889be88abfa89554bba. 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/ES5151602305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d09f774d115532e0b520a71f2f2d040a975d2157062b5db58c6a678c649889d. 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/ES5151901447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff0fc8ef6532126350a8a95a259244810dcd8e335fa33586029e2e85f3a091e7. 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/ES5151901448.
Whisper (feat. Robert Mendoza - Live Acoustic Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd99d146c5c1962cb8b660f7714f377edc28c87bf507b1287c14eb9148b9506c5. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/ES6702100625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb17ab74e01e534c6fe90e2f7687f1a4521c53295a4a176dec721d3d665e9adfd. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/ES6702100604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc239edb958b4aa474f067fcacfda4cf56c1962c53fe5f95bbb41aa8d3a7ca29b. 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/ES6702100607.