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 0xb50e78c12661f6035d717754e066d83e23bdb72c2e5a8e752143838af962cbc8. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d2a19a87-b519-4440-af30-4aa2f26941e7.json and https://artists.proofprofile.net/proofs/artist/d2a19a87-b519-4440-af30-4aa2f26941e7.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 0x070ac3c35abbbd715b79f51c9e5c6fadaaef5281600f280020bf5352afbd8957. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/NZHM11000171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a48ebff2057c44e4a63390738486d8f69d975305c7c3cd6dc55c637fa885c3. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:04:02Z), 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/NZHM10700117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bce9fe3d7012edab7990d07df96d3d895e542dff25f70b35afd3bd530fbd1dc. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/NZHM10700120.
Tamariki Amuri / Te Noo Nei Au I Pa'E Runga E / Tutu'I Te Uaraki / Na Teenui Nga Matareka
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed233b562ad4797d69a9c7068b93f9a680ac6672304333f952180b6c58a4a9c. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/NZHM10700121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe16d416209bd7ed5c2514366e448745aae37c472601442c225d33ef7746210eb. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/NZHM10700124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e10b8b125fb496aed22e34869b0a26490cb4dae1dd7277f449b077bcac8e1e. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T03:57:54Z), 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/NZHM10700128.