1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x86eec525bbec4a5f81256a98e8d3df62e2f5aa980059d8dac4ff669739646c18. 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/cc6a7449-97a9-4557-8027-3f6501f8e943.json and https://artists.proofprofile.net/proofs/artist/cc6a7449-97a9-4557-8027-3f6501f8e943.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Keep Your Head Up - From The voice of Holland
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 → block OTSBitcoinBlock must exist at that height 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 0xc9681a6cfc34b67e321e592e08a440d56b63d78927ec46e25c6ae4c46c04974c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T22:05:49Z), 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/NLZ291200242.
A Night Like This - From The voice of Holland
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9efbed11d4f870f0cbe7d7ff198954bf4b7b39c92916ff3fbd63bf607ca7fb5a. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/NLZ291200322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e607a7107b29446504ebcdf88c11eba92b95bd657e164a4ece98f3342a8367. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/NLZ291200327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d3440f07d0900ff4a6215ead74d2ca12c77cef943021507ce6f4ecc745a6cbc. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/NLZ291200296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5426c9a29eefe0f87b313aae207ff8024560ecadc24670c298d137ea3a6f2285. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/NLZ291200323.
A Night Like This - From The Voice Of Holland
Banging on the Doors of Love (Bonustrack Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa216b186e819f627988cb087e6460bbcee35fa32d7c75235328f2a299fdd6199. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/NLZ291300549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8292132220dccbbdcdd2aa7054de23ccd9a2fe5a8f4258d9ef89238eef2d1e9e. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/NLK7B1900002.
Tiny Dancer (Better Than Ever / Seizoen 2, Aflevering 2 / Live)
Tiny Dancer - Better Than Ever / Seizoen 2, Aflevering 2 / Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18bd0a4db66527f3eafbe8b50fd33d9a81dba50f8ca028814516207f32cdbfdd. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/NLUM72300437.