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 0x5a751328915b13619483136c44f6c7042029042d38b76d4bd5a4d76e4495d0a7. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e03d9b0a-ec9c-41f4-b709-b4c5d44c3aa1.json and https://artists.proofprofile.net/proofs/artist/e03d9b0a-ec9c-41f4-b709-b4c5d44c3aa1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Optimistyle le goût de la fummée (instrumental)
Optimistyle C´est l´heure (instrumental)
Optimistyle volver a empezar (instrumental)
Optimistyle Briser les barriéres (instrumental)
Optimistyle Le fleuve de l'oubli (instrumental)
Optimistyle sueño despierto (instrumental)
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 0xcc4d8af187ef1d1e2b0c48f2a240944255b911a3ff06eb25a84e5371ebf4704f. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/ES31E2501942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8486994f32fce614fa13bf7873cb413172efbb359c8059a218a8620ef30de5f. 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/BK4DA2310194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba97f27c45a3e691b86739a483e95ed09bb28ba216224ca8e9fb61de47c7b5e. 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/BK4DA2400290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a4c488a7e247a616f6a2e155caf6919ac751a32f8307e0a408363f469f1d4d. 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/BK4DA2400292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8486994f32fce614fa13bf7873cb413172efbb359c8059a218a8620ef30de5f. 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/BK4DA2310194.