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 0xda248f8e3ad03a1e9578d4dcec7c81579e2f7de3835c3fb766501a37830e0e37. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d904a93e-1d9a-4c03-bbb0-c0602ac31c00.json and https://artists.proofprofile.net/proofs/artist/d904a93e-1d9a-4c03-bbb0-c0602ac31c00.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 0x5ad1c9a93e3b569127e17b777cde8420f5849a0e5e82e9368e16d591c1413a17. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:10:53Z), 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/FRZ180300091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4abe1f2af441e08447908864dfe14c86c97367156cdefc72539556e8cec26e2. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FRZ180300092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24690f4df6805c80b0f067c0853aac10db3914742d8fba4de9a756ec416b9b92. 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/FRZ180300093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f21ed12d677b797f09f229d5e59685890e3af1402519feaf8532759ef5370d9. 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/FRZ180300094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245cd1565c945d6ecf15212bb41e1e3cb7a036143d63b96f55f061b90ad312be. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/FRZ180300095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86cc1b4420d6b652f64c56840476c030335b5455f18cda3e0393808e37c170e8. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:34:52Z), 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/FRZ180300096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ccc344d4493026384eaab3ab2134c9c8c74a142577c44cd000e1689038af68. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FRZ180300099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4552ee0e9530d1a03803600b7fdbad64a310e5c5cc53dd74138908c801265d5. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/FRZ180300098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759be74528ac6d84c5c7c0eb74b666200aabf72813e9ff4bb55201b72db358be. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:59:44Z), 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/FRZ180300103.
Bock auf Rock (15 Rocksongs mit den Rockkidz)