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 0x245d32a6ef387f285f463aaba1c3ccb34250923d35466c8a0020b73a4e3139b2. 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/b486934c-cc95-4ff3-823c-3c515fd13900.json and https://artists.proofprofile.net/proofs/artist/b486934c-cc95-4ff3-823c-3c515fd13900.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 0xfd202da7e4c85f6865f5ea619c7d2e92bfc9f9b70c46517bf0f76a687b5dbf39. 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/DEA622503158.
Icon 5 - Welcome to Malaga (8 Bars Challenge)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc6346edb177430e9a498d7a406f29c297d72fbcc0cf4ff0d8995f3cbfab857. 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/CH7812365442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73cf0d5efe141b27ab57824850294e32cbff15eb0c3e7b625d3e9b65ddfe23e3. 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/CH7812351629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2f9f26ecc581f93cb40f8a4f068cf3087f3193423a9b214219ba902d8961cc. 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/CH7812369715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a06c0725284bc8e26174d247ce9e5813da7e894ebb00a4a43c27112d1e97813. 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/CH7812365782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc6346edb177430e9a498d7a406f29c297d72fbcc0cf4ff0d8995f3cbfab857. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CH7812365442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d281da6ea70f04247bdcf2b6f8f3272daea517c39d912e582070a61a127ba0d. 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/CH7812363152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3357679b4d71525532cc6ed0c1ac6b6f258baa6539f8f8e8a471c4356645e477. 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/CH7812369057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e01d0f534d361f125ee9cbf62e14491c5c6b3d696cdfb67a103759a8a0785e. 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/CH7812370025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a54cb9ebd780a8f091dc7c1fffa255eea3468c5f87ed1487a8abc7626c6986d. 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/CH7812368260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81d6d70354dc4cefd3079d48054acc469f8b00cb9a57fd21cf2461e791828c1. 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/CH7812371668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf879053183bc0f1cf372ee6705897c1b9f5ca52d3dabad560d24bdf6822b6489. 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/CH7812367619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06006e511bf90e745a69e0c324cc27ce646e77b600c83983384c50449458e91. 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/DGA0R2497819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322ff39a0bd6fdb18c3860f32d7a5ad24fbb08284b852806a59a71ae2e64d638. 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/CH7812357993.