Ladilla Rusa is a Spanish musical group formed in 2017 and originally from Montcada i Reixac, which is a municipality of the Province of Barcelona. History Tania Lozano and Víctor F. Clares, original
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 0x688fe09dbe0abcbf10317ac2517cd1ed7def094c8187d1f1ac5f8199dd1bc9f5. 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/f2f5ac86-8dff-4756-8028-cae85707f3d4.json and https://artists.proofprofile.net/proofs/artist/f2f5ac86-8dff-4756-8028-cae85707f3d4.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 0x9fbe040b211091f83f7662fed48d7330daa01b272847edf9f11f639e213a3ac5. 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/QM6P42418633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x806c31c556850ab323c551a168bcc9fbf743647a7defb62b215cab55d73f61e2. 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/ES11C2201329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc07893ef294bba6c17b95310440866dc54fa3eea6a736e6a37bca348528acef. 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/ES11C1900965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b40eae093132b78885cd3e8590552edb4f8a4eee6ac96a2dd97be5da1f1e3f. 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/ES11C2201331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6364205cd7280d1126c1520de16968071823735315a4fa1afd95dae7834d9f38. 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/ES11C2201332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2839674976c343a7ee22419644aee39f8b3dc90bba4a4f2993f0c1c16a20ed3e. 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/ES11C2001140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b5264608246f32f41c2f25813497d7758e643187ae71aded2ea812ee26effe. 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/ES11C2101202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755e216ace98572580f1ee54ec42c2c5ffbd5b094e199d080bade0f2994ef3c9. 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/ES11C1800866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be3d35f2b4572de5af9d65379801b12b34ee55ccd1b8734d2e154ce7025cb98. 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/ES11C1800867.
KITT y Los Coches del Pasado (New Beat Order)
KITT y los Coches del Pasado - New Beat Order
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86ff07c8cf78694a72893f8eaa73ede5a185b315c751cc75681733c92448b21. 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/ES11C2401620.
Kitt y los Coches del Pasado (Sofía Cristo Remix)
Kitt y los Coches del Pasado - Sofía Cristo Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ffd1d4ab97fa9c0f4b6b501d7452c80b412f80327c5377431e73be262ccf527. 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/QZNJX2444884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c57182a17c6ddff4f45e04317b61e63407aca5bdc89d2b6d89ea282374bce9. 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/ES11C2401584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1698a5638e93ecf7410c269d5c320e23270117aa80f4d1614b04fdd579f08d. 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/ES11C2401542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b5264608246f32f41c2f25813497d7758e643187ae71aded2ea812ee26effe. 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/ES11C2101202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2839674976c343a7ee22419644aee39f8b3dc90bba4a4f2993f0c1c16a20ed3e. 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/ES11C2001140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb5fa1e391d245c012b764bd21bd65f3bd96e62d645c84c21eefb2e44e992f8b. 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/ES5151901585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ea352e39cea11b24369490c7b5e9463d22c07c28a7027772e3bac3b43532cb. 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/QMBZ92471813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e52e61f28ec8fad3e4a84697778892ffb29b0ecc6e7bc1802682c8d207827e1. 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/QMDA62457238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb2a7dd066bd76475b6b9c2fce9b706545ebca40a8705bb28c641953830b268. 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/QM6N22481523.
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