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 0x85998cdcd4120c1a65852831dee48511a094d3c4f6c6eb02e7ae5c62312c94a9. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0f3b316c-d208-4c4a-9fcb-fa2c0a6e5fe5.json and https://artists.proofprofile.net/proofs/artist/0f3b316c-d208-4c4a-9fcb-fa2c0a6e5fe5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Artist Choice 021. Technodreamer (2nd Selection)
Artist Choice 031. Technodreamer (3rd Selection)
Artist Choice 042. Technodreamer (4th Selection)
Spring Tube 7th Anniversary Compilation, Pt. 3 (Compiled and Mixed by Technodreamer)
Artist Choice 051. Technodreamer (5th Selection)
Spring Tube 8th Anniversary Compilation, Pt.3
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 0xef6de51a142cf46b092c1da5044ed79f8c649870af5c031e4794b498fc2c235d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/AUXN22303898.