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 0x87449fea24e566c7aedf92d37adc71edc6aaaa50911d18c3bb8f023468b66e7c. Chain 2 (Bitcoin): anchored in block 953782 (2026-06-15T12:13:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d5323755-be0c-4484-a2f1-96bed007a838.json and https://artists.proofprofile.net/proofs/artist/d5323755-be0c-4484-a2f1-96bed007a838.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 0x148454bee8fd5da6bd06d19285f1e90fa70af3289b0e089f2acb68f4aa489608. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:43:25Z), 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/USRE50402234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e17d49a90c75ff7a6c2006cba86dd37d28e77098c20e263e0642356d49c7bcd. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/USRE50300181.
No One's Gonna Change You - Jonathan Peters Soundfactory Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d728fd1770debfe237c17a524744c8fc2c9654b909f25d9e7a66b59c886a11. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USRE50300381.
No One's Gonna Change You - Jonathan Peters Mixshow Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49b1929408559d052b574e6270a624180d472c38e18bf9547d476988a8d3258. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:39:33Z), 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/USRE50300481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c478f91c8b92bb2ab110608359fe4806fb0159d51434063ce843f8ac6855754. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USRE50401111.
If I Close My Eyes - Jack D. Elliot Radio Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c478f91c8b92bb2ab110608359fe4806fb0159d51434063ce843f8ac6855754. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USRE50401111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a25f8a12857ddc7be3676dfb7288275ee76e21c2e76a6f63ae521666acffb12. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USRE50409549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52435a9a6c7ba3b25cbee81f5f33f2f729dd28e5d67ccb07fd32c9048225ff96. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:22:43Z), 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/USRE50501127.