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 0xf31c911130b0a3ab02bcd5e354bbf67171fa881b4079be160bdc426e80378ffa. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3b1cc5e2-ad32-49e1-be8d-57a9f695a680.json and https://artists.proofprofile.net/proofs/artist/3b1cc5e2-ad32-49e1-be8d-57a9f695a680.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ľudová hudba folklórneho súboru EKONÓM 1996
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 0xd92cc07c25b7542dbef549a28359696fef839de55f90ae3a8c6965ddef6ac35b. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:05:25Z), 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/NL4NL2018128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3f6ff33055337683698e331ba5342bbf80a6226d463dff8414a105c1a61c99. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/NL1AP1986149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd341040ea6a20f74538b95fbde10a5e143e984b1553eb47c80f1cdc7c720cdde. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/NL1AP1986151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994bea3d9bc35b87e6fc43eeb67b80434684491dc6e0d5a7f11167b661239655. 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/NL1AP1986156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9253502fb14e9d2c4b404539ea3455f564c6443f8d491c367f30c56cb872dbcb. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:08:06Z), 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/NL1AP1986157.