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 0x7abb89e7596b8ea45ee7192cf41c0a890af7c286555eeb8b258ad0e532cf2345. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ed7dbaca-8bfc-4c68-9832-b93948196e55.json and https://artists.proofprofile.net/proofs/artist/ed7dbaca-8bfc-4c68-9832-b93948196e55.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Psalm 115, Op. 31: Nicht unserm Namen, Herr, nur deinem geheilligten (Chorus)
Mendelssohn, Felix: Psalms 42, 98, 114, 115
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 0x6bf23e5c611d768f3b7ae70a6a45aa42a9e852d7050f81421f850b27d6f29da9. 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/DEA550312378.
Psalm 115, Op. 31: Duet: Israel hofft auf dich, du wirst sie beschutzen in Not (Soprano, Tenor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78a73e46fbacbd3dee2dab273123fbc0e2f51c63d693d9a3ea852ce40b60cc2. 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/DEA550312379.
Psalm 115, Op. 31: Aria: Er segne euch je mehr und mehr (Bass)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48448a6098cdf1ade7b6f22a4aff975cba8d29e887893ebdcfbd9bf7b7be3cbd. 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/DEA550312380.
Psalm 115, Op. 31: Die Toten werden dich nicht loben (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01bd74c4fb107833dab02dc5b27a0826bb26ff6e32030e2fe594207d0ef4903. 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/DEA550312381.