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 0xc5e9d3d1dfda73dd7103ef1c1511ab96aaec5098dbd6a915b5c849a99f66fb76. 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/52fd87ba-38ab-41f6-a294-804ecf965c71.json and https://artists.proofprofile.net/proofs/artist/52fd87ba-38ab-41f6-a294-804ecf965c71.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x5dc9cead38079c654d86b9ad8a01b14e01dd3c5628f2d25ffaeec96eff11ce7e. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/NLZ291800151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9588f1e2f685aa9b7413063e2986a2b77a40962b35474bef04dce7b41d197a4. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:26:18Z), 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/NLZ291700377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43300a5b25514bbcdb39df8d142cc390ac510d506b3637f63954f13f67a87721. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/NLZ291800354.
Du kannst nicht immer nur einfach 17 sein
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f98e0fd6b95d00078145c2c0d1cc3fabbfb8ab6aa237c971b37063de4512886. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/NL1DM2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305a53bcca2095fc0cb5f902c53850886978bce56b27c7c3a67ee350bd02f330. 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/NLRZ82300029.
Herz aus Schokolade (Hit Attack Partymix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3fcfa711453caf1618ee92a00e32ff0efd0ae4a56d86e23d586c685f544d178. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:31:36Z), 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/NL1DM2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb76845ef85b9491479c10b55f982c5fb711f4ba5cbe9a84892309abd48309aa9. 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/NLRZ82500367.