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 0x5188913ee0d71f6159b3899d56ca4da74d197e214c32926485539aebd9feb39e. Chain 2 (Bitcoin): anchored in block 953765 (2026-06-15T08:55:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bb41d454-d464-47b0-9b2e-b0d0327bcf83.json and https://artists.proofprofile.net/proofs/artist/bb41d454-d464-47b0-9b2e-b0d0327bcf83.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 0x70f1357ad6223ca1db4ad7ba80e14207d8bb0b81abf4da47caa68e3200b436d5. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/TCAFT2116856.
The Legend of Zelda Majora's Mask Music Box House
Kris Wallace Presents Guitarist of Time II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a6c8dafa92042bc2e6f89b7d757182c7979ebac28667b87961d0a8804c2c45. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:05:48Z), 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/TCAHB2382901.
Kris Wallace Presents a Tribute to the Masters
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f618797c9f9314dead46e999de5bf899830594b0c6d89a2952060fd181440d2. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TCAHX2434003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f30c1a7e45dfec969076d15a16c643954d18fd7b45d8835d6106d2715fb4ab. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:54:22Z), 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/TCAJM2583039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57e8d86ae6b8b18fa74a6b423ef08e7c06b810961346f918b72727fd99c7562. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCAJM2583082.