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 0x6c2bb5bf7cd5d662dc5a2aa39bbb50373552609ca20137a5cdfedfb93ada8122. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ed88b98c-f308-4570-b901-7222149a9fcf.json and https://artists.proofprofile.net/proofs/artist/ed88b98c-f308-4570-b901-7222149a9fcf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Covers Vol 1 : Ariana Grande, Rita Ora, Zara Larsson, Ava Max
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 0x6aeb9dd0923798db885a1cdbfca00ff9269c27789b9a6b70151a51de2c387d17. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBKPL2087183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de52958a94b407a164b3ba0340b744e1adc632650436c274433e0bba9984f29. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GBKPL2088925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029905fd7c169e8b4682caec1f2bbf40e1345118f9235d894acbb2995983b62e. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/GBKPL2023449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b5051fbe2c6a3789a3c884ba8172e1706769d9e56a0da6d55a3ac3f02e5b7a. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/UKW3Z2101936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a419e1d2745b371ddba8b89ab77e240634f2bdc0c3170b160210cb78f706989. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:09:47Z), 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/UKW3Z2102217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef2e468fbea78c3de0eb605be2d6c149e50b0ad6d6a2737edd0a6855a2fd6008. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/UKW3Z2202890.