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 0x269938e554bc1c14a7a2746e6959f879febfb5b6e5da9ca79df710a2d0d5361b. 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/35730a06-6a6f-4a1c-a1fe-7faeff817e94.json and https://artists.proofprofile.net/proofs/artist/35730a06-6a6f-4a1c-a1fe-7faeff817e94.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Het Beste uit Liedjes met een Hoepeltje erom
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 0x7c900f81a3bcefe7a67adfa15e20d5b5e1633e12c9bfb8d7776512969c746c05. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/NLG620413888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb0444de4534b25ae76ff8281bbf190e9c022d353c3095647d6d00150debc62. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:16:52Z), 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/NLG620414046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224e0ad9638109f25d370f2ac29ada64002a993ac79a4f9291e2427aad7db8b1. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/NLG620413932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6db5c19085d1552b88a4bb0a8a6c1a1c0c01c82041e2bdcdc03d4adeb6e8d7c. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:39:18Z), 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/NLG620413935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb2e3cfb6f8218a6f7e68602f752bfa376a13b4992ae0de35b6aeaac0beaee0. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NLG620413940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475174f0101e97c1ff8df03f7977545e1d6dc218b5af6e986f46f177900d3a7c. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T11:01:31Z), 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/NLG620413894.