thumb|A raw rib roast thumb|A serving of prime rib roast thumb|Wagyu cattle are an example of a breed raised primarily for beef Beef is the culinary name for meat from cattle (Bos taurus). Beef can be
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 0x669c8e147ec9d6677a966a50d5d837441e02d062c861305ce3946da83b8a16f5. 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/a892801c-af28-4a61-8968-26891099112c.json and https://artists.proofprofile.net/proofs/artist/a892801c-af28-4a61-8968-26891099112c.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 0x87c93806e9de90b36c04fbfa822a8b0d87d6f39bcc8d0d32116d2e5102064e5a. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/QZFYY2078670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c2be6544ee477cf7d165d96d4c4255c39d955e2058e9995aad027d4c4d49cb3. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:45:06Z), 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/QZHNC2017950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5104f5eb9da62f1d01c54bd7fb4c47f872202e28fadf09ec29b5cac1a2a36797. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QZMER2099099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8caa06bc8c553673d020a457df15817683cf8c9b94217a353e1fb1415821596a. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/QZFYW2117670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74e81112c2e35ee0e842b77d9ec4ebdc32e8f0a1022c55e492e5f3feb3b3132. 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/QZFYW2117671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42db7a48bbca34763b008ea0de7a14075470bfb50045a8e0a0dfb8fc24a93613. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:09:11Z), 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/QZFYW2117674.
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