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 0x653bf8e1d849b46dfe1383dfd356d11a62e1097346ffaf9617e926b7432b838d. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/20256eb9-2b92-4d3b-b5eb-239b2eec2929.json and https://artists.proofprofile.net/proofs/artist/20256eb9-2b92-4d3b-b5eb-239b2eec2929.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 0x49029a76856ad1b12ae4105d671d39e0c196659cab9251152bc3b107ec585981. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/GX3Q92466494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf68d39caf1e56222222cf1383c9f3dc4d154a8a60601a4b9b0ef5b636bebbd. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/GX3Q92466496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41df971d8cea65eefb6d5071cb47f96bee91415c28714fbb9eb0b8b464fa047a. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GX3Q92466498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4638966dea67674406a84f804ead948b16c68ac9cb67f38daa044d9f3e7bc8e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GX3Q92466499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba31be1b9b3c32f9556d8a68d9c40f13cd1774868c8728cee555fdf14bc95051. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:22:56Z), 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/GX3Q92466500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246aa6c32689aee7678d8502fec9bbb516480ea3c2dcf264b8369f64034b675f. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:36:57Z), 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/GX3Q92466501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c826676ae63af48815d2b345ac96626093e0740ca57791a31baf12d30d011f. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:00:32Z), 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/GX3Q92466503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeced39351a8aeb9ef8347685514924d886f9d1d07bf9df2be1dd3493cfbc7166. 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/GX3Q92466504.