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 0xc4930f0bca95f070e95347a33c805e33f9f85a2f5faeb01d1f1404698edfa647. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa6b64d1-c0fe-47fd-a733-45f33a9f1679.json and https://artists.proofprofile.net/proofs/artist/fa6b64d1-c0fe-47fd-a733-45f33a9f1679.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 0x61aa092c24ac9ef3a276ee3d43fe8278d06dbe1c9db0afac7abc8dd7d02942ea. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEA812300281.
Sommer auf Malle - HouseKaspeR Remix - Radio Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd849a40067a30b431e360812f1a405c9193abc0d6b62ebe67164f84740949f. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/DEA812300376.
Sommer auf Malle (HouseKaspeR Remix - Extended Mix)
Sommer auf Malle - HouseKaspeR Remix - Extended Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181cd5b8fd4b90962baf263764b3105b1a35bafaa7060a7e203481911328233b. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/DEA812300351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa284a95d319b3871d9e4ac2b2663be06a2fe2d9b0dcc1bca791d8c2e92b2ca8. 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/DEA812300481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3431a92a0ff87ebb576371a206fc79d69d720445dcf0cb23f38c53f836fc10fc. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:09:04Z), 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/DEA812400138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f96a087bd0bcb67ecc89eec0392603833e7ed5f3f2affd80f7bc4085ce786d. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:38:54Z), 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/DEA812400415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3adca3efd58e34aa80ea9571d0b323437a32e6f89cbce0935834049332e509ba. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:00:23Z), 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/DEA812400505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f359e0bc6598d4a70ff286de0c439d1baab56c3784bd0dc8113189a53709fb. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/DEPI82508444.