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 0x04414a0726b5e77ba6c2deee9ae4d7ce0593c6225d763125ecd5695a5f7af2c7. 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/0cc45047-7b79-43d1-b1f2-31194fccbd97.json and https://artists.proofprofile.net/proofs/artist/0cc45047-7b79-43d1-b1f2-31194fccbd97.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ik Lig Op M'n Kussen Stil Te Dromen (Expanded Edition / Remastered 2024)
Liefde (Expanded Edition / Remastered 2024)
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 0xa472024102638e54dcbd0a6c47c34346f899e01c7cda90794905d283affeb3e8. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/NLA240100841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x250c4a4e936d24e01274c64cfe049fd87bf788687e2ee553e4b476fa133a8e55. 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/NLN350700019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2176c3aadaac5568a7c01788bf0e12e4dc7aaa1d0a32f7440ea9aed3bd33744f. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/NLN350700057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c20c8c3ede2526ec90d388ffc04527666312037ca7556d6195f52d8abdcd36a. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:01:15Z), 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/NLN350700058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb134749a548bac7f48d37eef58ea583b11aee4bef0b845524c3e779ea5feffc. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/NLA308000017.