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 0x9e75593d82546fa012746bdb8f1b733658e8b4a0272c7dce6ca862c837ac9c7c. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6d49acca-a5b2-4f66-a27b-d9f62b854806.json and https://artists.proofprofile.net/proofs/artist/6d49acca-a5b2-4f66-a27b-d9f62b854806.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 0x81efba870429c06ca0827dbe73057f270b36faaa9334f3209c12bdf25ccc2797. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GX53U2353100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbcfbb17721aaadeb71aa5e2bbf1a7e521fe1efc73da26ea3a0a8db5f80e68aa. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:50:06Z), 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/UKXN22547663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288e1d73117b441fde0c6f628a5c0fe8f7ac8f26215e3c88e1244e70d89f591e. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:45:50Z), 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/GX53U2510123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d985a569c17eea43528c9f0fbc8c25f286d24d3326ae5a7b7424c7134942ad. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:21:15Z), 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/GX53U2556743.
Im Only Here for the Party (Extended Mix)