Sig Ragga is an Argentine reggae fusion band formed in 1997. The band consists of Gustavo "Tavo" Cortés (vocals and keyboards), Ricardo "Pepo" Cortés (drums and backing vocals), Juan José "Juanjo" Cas
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 0x6c8d5ce20cf72a9420b6d8a5297a797237efc386e957df87badb7518170c5e10. 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/ed0cb80e-32da-41c4-8eff-ea571fff7157.json and https://artists.proofprofile.net/proofs/artist/ed0cb80e-32da-41c4-8eff-ea571fff7157.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 0xfa7b216d2caf0dc5522594398525914369cd3582604b507bc3ab1c5fbc846355. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ARF471300084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f46f08333db3d7c1d4c3a77b223f42c3136e88e7ed37f366bbed54137372f03. 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/ARF471300088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1467c04666edb7f83b015610c2afa62c6f4af27198871ad08a8f42ee7944e5f7. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/ARF471300089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fcd109c4f49cae56c19aab53160dfca3d3f213870833eb5354dc580df60faff. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/ARF471300091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808dee18ce2753fd8dd5969cbd2424296672c8213562966429e82cc030ac9ca5. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/ARF471300092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d556516decb2506c0178482791f92a5cf8470e1da106a46ed93f627b8efd3d2. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/ARC081600114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9438dc55d686b31bb13dd7524614a60900941459d2214ba934b027125c45fc80. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/ARC081600119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x083c89a68d32a5a8bf76b2c655892d3d43486e840cb1c0a4ce2242c7d0ec992e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ARC081600069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6ae0657be2fc1c48d0c9e893c98ff59e842af61d51700d9bd4dd07108889b3. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/ARC081600118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada4a4c309d9c6bbc5167b235caf128332401bf4ec4c968e04ce92ebf01d8c9b. 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/ARC081600117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa76c7a4db0653b56cb3c0a2e5a8813dd47af5221985bdfb319e789e34c5ad2e5. 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/ARC081600120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x825afc94afac5ebe9e0f4acb148eacca8b2b2006b3174a73ad7771f305a3874a. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/ARC081800150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee82b02786b136002bd5f2f017f6e57066b09ce960a3d9eb438e417ad713854f. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/ARC081800128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7ee224be73b06296f435a1dc804c8590f0cc17cec4120155842d9b940b8a91b. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/ARC081800127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c26e3834e2e6124b6d384efd26908e9cf2362526ab4c58f611c3c87760e8e67. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/ARC081800152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf04ee01ed044ee3c72a3a9526bb6fae0f31a4b611017c075e94b6dd6892291. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ARC081800190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ef9e6d84f1443f009f05dc8e8fd8ce9339e6236c198de495667d837ba26075. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/ARC082000072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8ce8da37f1a68df8e302758a8449059aca60926f51d6423d431240f88f87e8. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/ARC082200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a8c6d71723072a8fe11f6f81b05878b266b0f3002ca5ccba205f1e302128ee. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/ARC082200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b10d7a531dba963fd0ac375235c3dc75f4cc9dfa77efa5608b02f8928f973a. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/ARC082200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9217bb9626ad6584a5e3db9e93dff889fdcfea475b2d18045bb1cee9f2adb59b. 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/ARC082200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44091f70b1ba0e79db0da6fcecb8d408558322fe880bb18d491a6452e755bca. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ARC082100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616dfa0cca3f8a22f8178c605fdc0092accbb62814385ab4837724f76d659356. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ARC082000129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e42bddcf40a0de44edf17ff297edb89d3629d633ed9e3b3cef9f6c35c70b10. 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/ARYSP2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ba0e0074b5462a73648ec6d1c31652ca19c86b34eeef20a6315d7594d91fd4. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ARYSP2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28919f01d69ee62e13c4fc7e8bd81bb3467e55032c0003d0427d863f2c5e10a3. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/ARYSP2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffac710b0eb781e6b16cf73462ef1101e34cbd8a6d104e897a090a0a3f92fff9. 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/ARYSP2300011.
Hemp! A Reggae Tribute to The Beatles, Vol. II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53b84d76f29d2aa739f1a4b737ec7bc40437087d4aeae21e7595a820692a5c2. 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/AR1K21300002.