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 0xf48460996e9de26a71cb252ffa343969a0f6ecc2be23de73402d0c49f56d2555. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d5e03cc9-09d1-40d6-9560-23452e142661.json and https://artists.proofprofile.net/proofs/artist/d5e03cc9-09d1-40d6-9560-23452e142661.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 0x027a4f5e615c7e2f4fa16c3a910024db8017ba7b78821c4db7c17ad8fa185357. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/GBKQU2499308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d60a3af62df4ab6eee5c3414325e1b1137d70cea4d8e03e10ac277218c7a92b. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/GBKQU2498094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa215fb8de292dc6afe178025ff79cfd6a3836ad4bb3717f3761fbc3e99eb494d. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:00:11Z), 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/GBLV62409208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41691425f3f3603834e94b8ca12061e7b3e2bb109fad24ee82b7d5c0a35ae2c2. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/GBLV62410699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e199f66bb03ae43e2d434d25a5771ab2d09fcc21f1baf9de9641dd455ff8e9. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/GBKQU2509957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x638d45805d367877bfef7fc8a9be8e0107771d5d98f06d02b711c177badbee2a. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T05:46:36Z), 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/GBKQU2509958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1185d06e7d8e84e63a73e233f301dabea94d028e452f31838caa9437c913625. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/GBKQU2509959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20cef2b69c5f0f0c30e7ed30f42455a167cbf03ebf96b5d4bbeb1c857c1b0ac7. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBKQU2509960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161beeed7f4c45d0ec99852c1cc64e07c800c47045912ac53db60baa3c98f12c. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/GBKQU2542979.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7af1175dd3e5c380c191d72c6f7432c2ef71103cfdcc9fd6bd36ad37f6605b. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:00:30Z), 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/GBKQU2560508.