La Liga Del Sueño is a Peruvian pop punk band formed in 1991 which had two minor hits "La Peor de las Guerras" and "Mala Sangre". The band was formed in Lima by several members of the very well known
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 0x424d03adf7ee3f162c776d7cb79b1a878e7b246e667008aaa41ad230002a61a7. 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/b40e4f12-486d-447c-98aa-caa327069efb.json and https://artists.proofprofile.net/proofs/artist/b40e4f12-486d-447c-98aa-caa327069efb.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 0xfbd161eab1bbcc79d81a387dceaf617b4bc0ee814d595c6424a9575a9b2870cb. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/COSO11000360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6409e3f3c4725ba4d4f44c5f936886caadc52af0b392be2e4cadd9d17a63b6b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/COSO11000361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8376eff14957e487a4e3f104b3ac96652536d319c15e20d5ae570dc3d068c8bd. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:51:51Z), 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/COSO11500798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75eeadd2ef8218acf60cd9a7aac164b8e2cb2c51c49d78c929dfff24f9b353f. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/ESA011610195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a42c2164f87370562fcee302ac9e3debe35b07eb944215dbc7d6de8cc046b8. 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/ESA011610196.
La Peor de las Guerras (feat. La Liga Del Sueño) - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aedc2b9024ce5e389fc70acf5af2c8f339d76ad35f3c289ab272c2de1277eab. 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/PESM21616015.