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 0xbdbb74f4a4db81f6126ccf9412c8ace69a7e1b04fa8e5808f437b4c720558e5a. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/49ce727d-7d7c-499f-a03f-ee26448a6561.json and https://artists.proofprofile.net/proofs/artist/49ce727d-7d7c-499f-a03f-ee26448a6561.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Biglal Hanashim Shani Ohevet (Because Of The People I Love)
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 0x9863257143c6c3197120ee56841b0028b643861873b6e8dc46a7ea49f14e953c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/IL2590301010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be47c7c1ee28e8ced5b7eaa51001ddcfe03c9c603a1f30b568662469f06a3c1. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/IL2590301040.
Ze Bincha VeBein Elohim (Between you and god)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906c318a315d448b5f8311ae18de11fe100a3fb7049613dd4b3cc870bb749933. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/IL1000001480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906c318a315d448b5f8311ae18de11fe100a3fb7049613dd4b3cc870bb749933. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/IL1000001480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906c318a315d448b5f8311ae18de11fe100a3fb7049613dd4b3cc870bb749933. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/IL1000001480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee48eca8912f59ed208f3478bae963170ece85fbe27bf05b66d7b0dac94d860. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/IL1010003931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08716c152d36a2f517cfce52bf672b72e9da3c0f030bbc3fee16ee5a22cce600. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/IL1010004704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac477716075244ef65168cd21ab0089bd73327539b2c8e99174405989c806d4e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/IL1010003320.