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 0xf0ff2edb4d54f203145281696fe18545a4f65e348d305987845d0fc7580dd7e4. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5cb45558-d6dd-43af-b45a-7e5406ba72b9.json and https://artists.proofprofile.net/proofs/artist/5cb45558-d6dd-43af-b45a-7e5406ba72b9.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 0xca13204866faccfe9ed44455fa4eaca891d9d1ac18021be9c7ce518295d3f470. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEEQ82400050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2a10be599bc851aab6677712c13a86fedfffcb7ce1e63e2ed95a41c55de542. 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/DESS51400001.
Zurück zu dir (Hallo Klaus) - Party Mix Kölsch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57456aafbaec4c6fcf4b5814a05487692b700a714711f29ff613a57c3dac85b2. 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/DESS51400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91234ba9534bbd1cef2bd5028f339a62eb29b1be4415f8fa841b85ec30e74b0c. 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/DEZ521300269.
Komm unter meine Decke ( Du Schnecke) [Das geht ab auf Mallorca - Beim Oktoberfest - Beim Après Ski und im Karneval - Hits]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c9456a636e8937fb2dbcf231ffc2ab20201e8f0aa6e54a67ab1fef8548dfff. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/DET370933073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe372291b12e48e53048c4662766b453ea06f09f02eafc2d05479750677e568ce. 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/DET371033079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb100773383ff0e99efe573cc56ed2e022fd1731ef774ac502c308101893328. 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/DEEQ80900008.