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 0x77cd7f292d3f22d9df944243a2c0ab424a19401f0607191765b5b5818708fecb. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/71ca1794-8a88-41bc-b1f5-e9d75ab9d5f1.json and https://artists.proofprofile.net/proofs/artist/71ca1794-8a88-41bc-b1f5-e9d75ab9d5f1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Breathe Under Water (Thodoris Triantafillou Remix)
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 0x45aa5a4a44ffd1d2f28811bffe8577a77ce93e70fcde4246388d310196d289dc. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEH742505813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0448723c00b97e3a38ad736b1d94b5a2dce598af0a0c41993ebb6f44b5d9b5. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:32:50Z), 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/DEH742505814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97da55e75a65e56240859018c7c60f14ec40e705cdac0d1f0806e55aff532bcc. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:43:27Z), 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/DEH742505815.