Cheb Balowski is a Spanish musical group that mixes styles such as ska, reggae, pachanga, rumba, and ragga. Formed in Barcelona in 2000, the band has eleven members, and their albums mix songs sung in
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 0x46f690aa1e3094d4b6492d794cb1ed6232e38b5e7398512d3a383ebb21ad5f74. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/827c53ae-21c7-4396-8f1c-0a91051b97ee.json and https://artists.proofprofile.net/proofs/artist/827c53ae-21c7-4396-8f1c-0a91051b97ee.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 0x22c6903bddb93147a353cb578416fcb505558436f9aac137b587b5fe44af13dd. 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/ES8020600082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52348e1dc227d0d567433df879f662112abe5105c949a8df1ed558283a9b0506. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/ES8020600087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa393a9b5dd25bf9482c7ec2df2ad943234ade72ed0c253320ae25ee176bac281. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/ES8020600088.
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 0x02980581261d0340a5d97e7eb4a9245c8e89fa15676ef035e6e5c3f54bdb2a6a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ES8020600039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2472ae96c2ece65d857d33a37c9142e749b9876bdee960e3e2c8a9d124a0b1b3. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/ES8020600035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaadb5ceb757f3f2aba065f2e0d17550bccabf474d4cb6827c1c28b0e436a8c8. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/ES8020600044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed984ce481a69f1dc0f57326e019d4e20c78a2fd0faed30f0ad7d67e00a0237e. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/ES8020600042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b6152d6cc219b2f48df531b747b3ad139f8001f93ba261301af9aad6142422. 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/ES5950501810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce0460581e4756f4aa0cbcd45d2d50655e42ad3ad2a0cfc7d68d89295930073. 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/ES5950501818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c160a65fa17a73b6bae5af96b33396e325f146768f5e0042587113753c24d95. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ES5950501819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad9e1c977e113bbf44c0a4fcac60d7436f109321269372a7fd8830a19f434cf. 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/ES5950501825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9218572c3636e9e70dc31a60b94e1a7885017f9ea29f271717c344912470a9dc. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/ES5950501814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d77f15060ed975b3f6fae9ab9fa8f29e534c9adef8e3843f5085c04499c0d6. 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/ES6100220201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78ff0752d52a254ed490bba97350cbb40a96799c8d5031e36bf0a37ed64147a. 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/ES6100220230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b31713e4302744afec90b5e3016e7ccc27cfb69a7e8d4f6d4116fade3e17465. 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/ES6100220233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f4318673c60ef1e1b6f3ea1c4af3d084bd9672a084b0e2cd3a48463d807050b. 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/ES7310500063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5775ebef9a2543972fc34a5404b5a477d920b8d24e73192c5b0da8ffb058f97c. 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/ES7311000083.