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 0x98e7eeeed98fc2cda62f6f7fd43d85f17d05d5dcdd92061244053d99aa9c84d2. Chain 2 (Bitcoin): anchored in block 953915 (2026-06-16T08:36:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/19f9ebb3-125f-4b64-97a5-8969e35847ad.json and https://artists.proofprofile.net/proofs/artist/19f9ebb3-125f-4b64-97a5-8969e35847ad.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
VfL - Wir steh'n zu Dir - New Remastered Version
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 0x43890f862e68a78d11572b5f464ce09ce4b9fa54ded7426af4a18d8bdb7563a8. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:06:12Z), 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/QM6P41809366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f098d1fb2669587438eb668270d70017f65e7282107242ba7852fd308b659d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEZ650509400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b0476a5efa0be83dd7b29e0479c5c812eb2f4725c91fcc7c56ab0a1382843c. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:56:03Z), 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/DEZ650600890.
An der Castroperstraße (VfL 2023/24 Remix)