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 0xed45c291a6b4285e5eceaafb6698eec9583846f1f664146cf32462c2565c3ea1. 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/0392ed54-08e2-452f-a74c-265b7c511614.json and https://artists.proofprofile.net/proofs/artist/0392ed54-08e2-452f-a74c-265b7c511614.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 0x52c932ce042418b11315a1788d4872331dbd4666a01abf245c718a120b4415f3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NZAM02200618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2459a0aebe82503b86aedc0db3bc84a9cde09d5f94cb6171359c2fb6df349751. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NZAM02200636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2459a0aebe82503b86aedc0db3bc84a9cde09d5f94cb6171359c2fb6df349751. 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/NZAM02200636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e36dc015657d732a9b16a9338a242f3ff8e51080ba8e19c3f008d900f0478a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NZAM02223541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00091910afbdb1ff3cca69997c3fa1715aded262102b910ac853389b4049a0c5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NZAM02200658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ca9ee981d4201954efc7c11fcade33da87aa8b947580c0428c8988247e7316. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NZAM02200664.
Kia Kino Nei Hoki feat. Te Kapa Haka o Te Whānau a Apanui
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b13fde625b14746a5e3955fd9381d690886abd380e23311c7ca340d64970f64. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NZID02300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ca9ee981d4201954efc7c11fcade33da87aa8b947580c0428c8988247e7316. 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/NZAM02200664.
Tāwhirimātea te tangata tūturu o te motu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacaf11c5c82d4eee31b81b3b510e7397bf77859fca9b8b12737e82d38743fb5c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM6MZ2542136.