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 0x0c168d01c9747af595ab826a256c9ff58d7f5f0c876a353a45bd378cdc5b4031. Chain 2 (Bitcoin): anchored in block 954659 (2026-06-21T06:14:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ddb52ba5-8f34-4b87-94bd-fe77b8c1dd3c.json and https://artists.proofprofile.net/proofs/artist/ddb52ba5-8f34-4b87-94bd-fe77b8c1dd3c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Auf Auf in die Champions League, SV Brietz
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 0xd1ce2171cdd6f25c3c1d3af467e3418ab00e035ddd6bb278e1fe1fb7af97d4a7. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZHN32596651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x154f19a33b680b0e5dbd81c64261b66134b98d590fd95ca8f6ec552f1fed0c70. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZHN32593232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b37a2e2e83406398b79d07abc2d474bfcc993d3484b597bc3264c21364df8c. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:05:19Z), 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/QZHN32596699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0bdf2e183ce15b2b7fc43064368061b17af6ed91076c3ad8a71713b7ab8cc6. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZNWY2592551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aebd91911fd8e8127648099244c8390c9993e780d675b19596c80c18b5b70e4. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:59:28Z), 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/QZWFV2579566.