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 0xfe9d0e2cbfe39d5de2005c183690ffcfd81cf5414035f0f75d411e56123a5c6b. Chain 2 (Bitcoin): anchored in block 953636 (2026-06-14T13:03:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/374b3cb8-d76c-4c07-924a-16863013b84d.json and https://artists.proofprofile.net/proofs/artist/374b3cb8-d76c-4c07-924a-16863013b84d.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 0x9adb80b00eec23e2d712b2a19ebf770aedd8b2d1490edd3fdd62deb15d3c81ea. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:54:44Z), 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/GBSMU8227759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09edacbafd126e7c60be0da8bd99f885f94acdbb43fe0e13b30ed32743755690. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:38:48Z), 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/GBSMU8395102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f88949efdac7fcbca6a0966f334d53d4204781e9c7e8dd06ec759fd47bb8c3. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:41:56Z), 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/GBSMU8512037.
Let Somebody, Let Somebody, Let Somebody Go
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821d23d0f0a1aa8e8872e1519955e9c9047b4db91718c177f9f887ba3aa7c27f. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/GX38U2161776.