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 0x24b0838233b9f9fafe7b2168601e7b38ee01812fbb77b54fc497fb984e7684d0. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0c1e5d37-ed5c-4e6f-81ea-bc079c18c039.json and https://artists.proofprofile.net/proofs/artist/0c1e5d37-ed5c-4e6f-81ea-bc079c18c039.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 0x59e394ade4f93c376e50a2c03d2dde0b06daef1c278d96c6501f51396e49b0a1. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZVEM2384463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6a552c2f882a8801c46aa7552c3d7a6caae65112a6647223379dc36575dd86. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-20T00:00:20Z), 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/QZVEM2384464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6117a499e7d7cf7f6fc94c098aeb1b783ab8b0367fe9c5f5e2707e3ffe44ac8a. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZVEM2384465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae633c59e178bd76aa20092ef080941c51e49e6bff04f27129a11197aed21506. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:49:12Z), 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/QZVEM2384466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9f9b1a43627190b92171471cb3eb3e9ab340d01f41abd2853d60c4eba7d707. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:17:04Z), 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/QZVEM2384467.