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 0xcd2b56267f60aa59b49a9b47b128a69f59a39ac845cfa1c2b4e69386a0badb5e. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a167c16c-d3e7-437c-bb50-b8b09d4c98af.json and https://artists.proofprofile.net/proofs/artist/a167c16c-d3e7-437c-bb50-b8b09d4c98af.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Die Glocken Notre Dames - von "Der Glöckner Von Notre Dame"/Deutscher Original Film-Soundtrack
Der Glöckner von Notre Dame (Deutscher Original Film-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 0x79b8bb369032cf95207a4098fec16fccb0f08bf0a655a99ee37c7293579c1340. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USWD10629521.
Kunterbunter Tag - von "Der Glöckner Von Notre Dame"/Deutscher Original Film-Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e501776304804a78950196914f44d839dc6bb36d634eca11907ed94bd40ffe2. 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/USWD10629523.
Der Hof Der Wunder - von "Der Glöckner Von Notre Dame"/Deutscher Original Film-Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d7afdc20d44dd5be974d6ca70346b22c6e5db73256bec4354ed32839b1251cb. 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/USWD10629526.
Die Glocken Notre Dames (Reprise) - von "Der Glöckner Von Notre Dame"/Deutscher Original Film-Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb33bcc34d88731cc94ec6ae81c1c52ac2a050fa1c139443d10eeaeaba49f64. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USWD10629527.