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 0xa145a802a77f7aa3633ce98f21ca40cc25a2c51a677d46bca3e5172e1af6734f. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/25646802-32d6-4a59-9fa8-098e997c8f6e.json and https://artists.proofprofile.net/proofs/artist/25646802-32d6-4a59-9fa8-098e997c8f6e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sounds Like Razors (Original Motion Picture Soundtrack)
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 0x4ecf09c2b660e3a093fa4a5354bd564dafea1ffe71889e107e8697ee10060149. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEBZ71700097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ff841b0b6f68ac7bf678442d41c1008ebeb274eadfaac58c5b13d34cb72e96. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEBZ71700101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a02ba7f5d67196ab0672d3c1627e6bc0b87525ba7eb0e4f09b910c8ff5b347. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/DEBZ71700102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f63e6837eda1e9240de4cc85d49d93a9090872749512ef7dc86ac4380f456a. 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/ATN262198945.
Ultra - Das dritte Ohr (Intepretationen befreundeter Künstler)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d57f553916fb4f0a0f1c54901dfe5d82cb69ad480c64e1471abe2515cc16e2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEBZ71500425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6c9e20d34fc5c4db25d6d99bd8e24dbb9a7fd593ae27a4622d0a90fede3775. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DEBZ71700099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f109eb3714c4ae62eb51b087e65c06bbda1360c27c900c70a668d969836d2e6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEBZ71700104.
Till Death Us Do Part (Rarities & Remixes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1693ae6184b705492c0aa32c65f7b47c5cc577728f92c28a3b89a09241b84ab. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/DEBZ71800660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba8f76d127ef27a9745b6b0cb8bf7a71f4721da3140753a0d364afea52d682ed. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/DEBZ71200446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f63e6837eda1e9240de4cc85d49d93a9090872749512ef7dc86ac4380f456a. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/ATN262198945.