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 0x3d53c5c65f3983f2b730f989885ac6875bc2b06544d656216071994a8edd4a42. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3098bc6f-4e67-42b5-a6ba-828fd40664cb.json and https://artists.proofprofile.net/proofs/artist/3098bc6f-4e67-42b5-a6ba-828fd40664cb.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 0x73f20658c61ebd4c9df767ae78f48075ed098771044365354b101084f9d14001. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:44:20Z), 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/DEMF31400136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc350ba5092516206437bda4150f422959ec8ea3d807190e0ccab23c6e1b930df. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/DEMF31400140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23256dd46b62e06bbab0175c6bc4acdfe0ad8360a9b29fb18b9d99f96d4ee39b. Chain 2 (Bitcoin): anchored in block 957611 (2026-07-11T21:33:50Z), 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/DEMF31400141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x811fe801b8e39c2e36b47a30a4ec7e1e02b42b2c8ac29fe2607c904f1d7287ca. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:17:01Z), 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/DEMF31400157.
Hit Me Baby One More Time - Piano Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8cc8c332c3fbbc449c2b1052eab0281547a6f66cbcd53aba1483547738197b. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/DEMF32100161.