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 0x29ca77cb20d5de814e7e7c241fe5e929abe00985c9d53bfaa940c3e4ef3a7244. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/67c023a6-830a-46cb-b0f8-e130f69733fd.json and https://artists.proofprofile.net/proofs/artist/67c023a6-830a-46cb-b0f8-e130f69733fd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Travolti da un insolito destino in un sogno Lady Oscar
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 0xee7b69bfb281030e2944370e49f39f2a9209fbcfe679c088f652478c55122c45. 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/ITW1X2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0506eab45552c4bfeca2926d1b24b9e1a35f4f055c2fa7695e6d0745e14b415. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ITQ002300864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a266b0f042b0c80be49bfe7696ff896688f7bab87403efb55178ec8e1695d3. 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/ITQ002300865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61d2d5b4c705637c596653fec5c8f5132b4ff89a2a94031db5b09bc2a512855. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ITW1X2400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203b4b08013a5800317955fd25f99775fe01dc43e97f1af7c5f11ec87fa216c7. 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/ITW1X2400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8f8b51860853d5691e29c0cea927b5753db5d848e94969ea0f26ec44d5b29e1. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/ITW1X2400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a8f9c7ecbc3792c0b6e75df73cbbe931c8fd4669c6cfa026d806346cdb4ce1. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/ITW1X2400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61d2d5b4c705637c596653fec5c8f5132b4ff89a2a94031db5b09bc2a512855. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ITW1X2400019.