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 0xa00230cd8a1ddfa629c1921795d824c72f32a91a1bee144028d68fe5c0542773. Chain 2 (Bitcoin): anchored in block 953819 (2026-06-15T18:31:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fb780261-4c7f-493b-9c34-f6e7f63abb5b.json and https://artists.proofprofile.net/proofs/artist/fb780261-4c7f-493b-9c34-f6e7f63abb5b.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 0x5c53c6c4d127f48d91ea2e358e7344b8b81397ab81a84fefaddea8f860748aed. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DEPQ81910010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa92d62afa5daa461664ba2d117f29677a4ed948af954b6b39f0ccfd53ec0c7d5. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:03:12Z), 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/DEPQ81910060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274d1ad02d29ebf15eeefc76fbea2cb82527fca1b889c27999722fd267095392. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:51:54Z), 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/DEPQ81910080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd045ec07390366c68e8446bcb7a28178a86f667d42a943db0edad91102efd07b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEPQ81910150.
Sehnsuchtswege. Lieder vom Himmel und von der Liebe