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 0x91607ed695cd46fea40e1d812005ef6514233f4ec0e6e5792beeedae5593b699. Chain 2 (Bitcoin): anchored in block 953730 (2026-06-15T02:47:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/93e6825a-3b87-4951-a393-3d7ca7d59ae3.json and https://artists.proofprofile.net/proofs/artist/93e6825a-3b87-4951-a393-3d7ca7d59ae3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Right Here Right Now (My Heart Belongs To You)
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 0x9ae6ea0b9b269a989839a9d90e84712aac63190140aed964b81fbc5c7661e0a7. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/NLP760600352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670c884e2dc01d5c0a78cab5d31583709f44a84871981391bd474ef748d8802b. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/NLZ291200061.
Ik Hou Van Dit Land (De Beste Zangers van Nederland Seizoen 5)
Hold My Hand (Better Than Ever / Seizoen 2, Aflevering 1 / Live)
Het Beste van de Beste Zangers van Nederland (Deel 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b407d5bc9ba92ac289b9f19afdf598085bfdd1bbdba65c4c5e107b953845251. 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/NLSU31200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8445558de4f3c09d7468a3951b060403c518f73893c019c98660fd333f2fb59a. 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/NLSU31200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51f1751b01992ab7b74afbb544f5706711e7f2381367205133fb4881c94d3da. 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/NLD450600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef2e5587649e54b946d61ac9f5e9dba477e89b8b5505f1646b79e059c9de7f51. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/NLP760600407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b407d5bc9ba92ac289b9f19afdf598085bfdd1bbdba65c4c5e107b953845251. 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/NLSU31200003.