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 0xe0c8d85c391d2e85ac5ab713237047bc37e5822eeca2c938f3503f82f51d3430. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a411c989-6faa-418f-a913-a7df92b97909.json and https://artists.proofprofile.net/proofs/artist/a411c989-6faa-418f-a913-a7df92b97909.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Culture - The Beat Tape (UK Music Instrumentals)
Splash n' brag - Special - UK Drill Instrumental
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 0xa3078d303cdf6d3b3b6caa6f194113d3721edc4d8a4695e92508a5e569b88a82. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/GBSMU5937755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900f86af51ba8764138ca3cb11dac4ab3229f329052d4404da0d27d5b8f739dc. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GBSMU5937757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4493cbf456b6557eeef00f7a3eab96cb1d5ad1a91c106b31af45a804d898d5ed. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:26:22Z), 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/GBSMU5937760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5a615c948c4f3717a2216989fba738dcde9ebcff58263c30c63c3bd657228db. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:58:27Z), 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/GBSMU5937762.