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 0x03243267da97397f36317b50f5b873567a2f02a958083d600a95289c86922290. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/71b75f11-f253-4fb6-9aa7-87d2970babd5.json and https://artists.proofprofile.net/proofs/artist/71b75f11-f253-4fb6-9aa7-87d2970babd5.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 0x0db9f343edd121d88f784a500c61eca8c746cef0b80008f22b35110aa660e1a7. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:53:22Z), 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/ATKD92339401.
Irgendwann haben die Vögel aufgehört in den Süden zu fliegen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3643e65176e363838f1ba2f3e8f8a26183c110f4f5c66c40f3372522589cee05. 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/ATKD92439105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f41eb44eb7b884e5353101c80de37f0fb3c148df6ff7558bb296a8cc4d5b0f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ATKD92439301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c16f5291a2f4db2a0349f4294f383ec0f79ae62a4a36115fbaf20d0fb2364f. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:48:03Z), 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/ATKD92439201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39ec1995ec5b0ab0edbeb7dbcd64fd5fafa555c126b227db5b3aa60bc942e64. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:30:05Z), 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/ATKD92539101.