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 0x33219b0e79eda4fb8266f079679dfb61dc0e3d1a27818e15ac0b1967175bdfae. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8b318e52-1e40-456f-919a-5b434c977eb6.json and https://artists.proofprofile.net/proofs/artist/8b318e52-1e40-456f-919a-5b434c977eb6.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 0xf3403a16556c674048799595680099e2f7bfcf55629eaf192c03a797d6412d2b. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/DEZ650711141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff61cc16b9b61df8194299880a675550736c7cf58d4583fe2cab4c2c1acb7121. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEZ650711142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa074778fe2a8f28c84f199327632716fe2b49e95fdc9374ae1ebeaf2f252f326. Chain 2 (Bitcoin): anchored in block 958724 (2026-07-19T11:19:01Z), 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/DEZ650711147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2bd23187e2a6b63a9d82246e50e62c9db92021fe42f07a2b44e0b84492417d3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEZ650711149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fde6d581e6235b94b738d150705c05c277d434081ab78702df1d5def8324958. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEZ650711150.
Heroes / Reise in den Untergang (2020 Remastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ef4570dfe7ca0799050840995cd32f06a5f3def94962890c0c0cb61c112cb9. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEUP12301010.
Olé Olé, Mainz 05 wird niemals untergehn
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736f18672f7fb568ed9f8f8364214ee61e2b93561e20b28f12a272dcd068480d. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:17:59Z), 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/DEUP12301006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x067ec7d53888de779254b77711b72993ca617c8c9e4fa20befadead3a4bdbefe. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEE021300250.