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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2626a45505c5166e5c11c238ac5d9a4a95c72e8a0469eb2461bd5444dc83b44b. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4c45686c-863f-4867-96e2-e76ed3b4ae67.json and https://artists.proofprofile.net/proofs/artist/4c45686c-863f-4867-96e2-e76ed3b4ae67.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Buffalo Its The Mafia (Buffalo Bills Anthem)
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed5c3728fc2bdcfd450a8f55fa25fadcad76552986757db745809ec11f2ea076. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QZHN61920579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde98fcb3fd304ff3196c86f81dad07fdcba0c2126df33f42a53e1481bcaf00ca. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZFYW2109216.
Rockin' With Da Bills (Buffalo Bills Anthem)
Clout In A City (Triple M Bass Face Flip)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64141634434a38bdaa1dff08d349b0c5cb3873f40113d5a2eb4481f532980cc5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZK6H2169847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0860da829cdfc29dd9763a26552e101cf1882653acffdce27735c58ba001da2e. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QZMEQ2291302.
Buffalo It's The Mafia (Buffalo Bills Anthem 2022)
A Bills City (2022 Buffalo Bills Anthem)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11fefd5116b0860962a313f94d5c59c3b0222c1fae591a97a8da635090019a31. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QZFZ62461887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7351a713bdc39ee7a7d460c9c91462c9fa15acff925e44ff7c4343babaeebad6. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZNMW2549958.
A Bills City 2025 (Buffalo Bills Anthem)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c5bf898d48473414d7abe5a7e4bd3eeadbafeef48d6a1b8a7147ef5af00d8f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZFZ52068399.