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 0x1e774adf50c4fde1cd2c1f0732cbf248ace000ecdfe13b497ad2e12faf516128. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/581e6680-d3fc-49f6-93a8-32d1b13bc5e4.json and https://artists.proofprofile.net/proofs/artist/581e6680-d3fc-49f6-93a8-32d1b13bc5e4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Silk Rush (Dutch Series, Vol.2: The Music of Jesse van Ruller)
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 0x6b495065674d56e294752ac335b7f74b2e4fa2e70dc8957a47c2be85eafd8277. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T19:03:30Z), 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/NLBW60800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c20f7d3a03692b9f811c7c8a0cc0b0f3b2c9fca03e15a13f221abd401b6e3bf. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/NLB151000091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279ac4620da62527fe0127ad127e2c2c1ca995ea706cfacaf04b70b5a0eec65f. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:35:25Z), 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/NLB151000093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9811320f25aade9bdd7ef70a39059042c165e05a9e3e05fe7a17be7d8d53f30. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/NLKR91200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78bd89c80c893c5c18bf51924daf68762e58605f72c764277a850700c25c8a4a. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/NLKR91200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b611e788af29b4bdb5d099e0cc17e2c47742bae846d7c7449d4673dd8a86f0a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/NLKR91200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe879c7db9f0258686fe15684a9701e7a16eb6deba7327fb39d8cc31520f71a4. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/NLKR91200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b495065674d56e294752ac335b7f74b2e4fa2e70dc8957a47c2be85eafd8277. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:26:39Z), 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/NLBW60800009.
Stolen Moments (The Dutch Heritage Series)
Stolen Moments - The Dutch Heritage Series
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14664bf53b398f26af849e9535b206885e79d92fe075afff8c499caf1cd015a9. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/NLKR92500001.
If I Were A Bell (The Dutch Heritage Series)