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 0xb34a688f938e8a64f600f72a7a14a44a425ed7cdf9de5e0d512a98ed05cde335. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4af78308-62f9-4019-b8d0-d8d887edffad.json and https://artists.proofprofile.net/proofs/artist/4af78308-62f9-4019-b8d0-d8d887edffad.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 0x160f86de0ac7d87e333e9cb364eba19ab10f9c4c0241e52f4fce47a312cd467e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DKUM71200049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf088909b4dafb8b4a0733aac2a4e108f5f8b54dfe08b4df644749b8ebb4010ba. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DK4YA1504602.
Fuck Hvor Er Det Fedt (feat. Kato, ATYPISK, Gilli, Ataf, Mass Ebdrup, KESI & Sivas) - G-Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64342ee51b68e7d28b42a5ed4ca9c556b6dbe0c66adb96d65b0ee2f24a1654d8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DK4YA1207121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8edac592e928eade5d17cd36992d0807352e01595c5bb733142f0db212af5570. 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/DKUM71200058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae94f0450a054c3408e6a3814dfc176b525b11637af53478812e26c5a314db2. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DKUM71200051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ab9be906ce31eb28249a0811656835cca979d7e6cf61c9f000b649ee4b6dbb. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DKWL21200101.
Byger (feat. Mass Ebdrup & Semih Automatisk)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f416f26c90c0d4b75a0b185ebc121d034d1be6abaeefa17e42b40094213f534. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DKWL21301004.