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 0xa5c4dfb6d0c945c353c2e1eb88db23ed3aaf920d89498d475fb5fa64c20ae20e. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d9092a56-63f8-4299-b10b-18a9ea8be3ac.json and https://artists.proofprofile.net/proofs/artist/d9092a56-63f8-4299-b10b-18a9ea8be3ac.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 0xa898c8290b0010710b3285b182339ed6d9fe524993bb6b0f6542c669ff5933b8. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:03:45Z), 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/USBWK0700660.
Here I Am feat. Phonte, Brother Ali, The Grouch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fce3e09d2cbf902c1cfdcd72f4d4a364aad553d7d9b25fc667aa92129ea56b7. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:33:02Z), 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/USBWK0700664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cbda3d33dd1f68de2dbf2774a0226888b63a116a3487dc1ce50b1e3d9d9a7d5. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/USBWK0700665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7737b2809076a06404d8de478a47772a9790a253416f46ebe05cc6981786ac98. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:24:17Z), 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/USBWK0700668.
Tema Do Canibal (Exile Mind the Gap Remix) [feat. MF DOOM]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f32ebe3b9d7258ae690fd1b36dda659d9f7f37c8772bddb6014bcb87eeb898. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/USBWK1100084.