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 0x57293c94a5ebdaab248d5bc596ed5e52976039512d37fcff0131b8d8882cb958. 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/3a5d04bb-022b-4b21-b615-74558d8c90f3.json and https://artists.proofprofile.net/proofs/artist/3a5d04bb-022b-4b21-b615-74558d8c90f3.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 0x556c417e271972b7c9c80be34a08cb3483e468f444e92fc4845eea11cffcf3f4. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZMEM2275477.
Father World (Mama Earth) [Jako Diaz Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9708ddbc6efac66dd55b8345a40a3e842aef8b4eeae479cdd29f2a03540af30a. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZTBC2385851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c95809a57a717428b726ec15fdea1490ae4ae5b9c883100aa79c48d0973d22. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:51:31Z), 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/QZES72408409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63059838682b417d0f0530f5d0028416aed40dfff60d21d77765a06115ec815. 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/QZK6J2402447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82329085e42783513fe80db2bc3827f08df418c98251a5d3bd34df32fdd61eec. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZWFH2403655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d8ed89a97e8d46f13601f44ca309f0f7b2439f94e536fce70d9ea0bb4e89637. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/CBDCZ2500315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9449a00eb24221be9705d1db2751a5222e82ce833158acce2b05a32be7188d39. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLT2H2400823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c90bdfda67356d97075859b6fbc0f9d092d25035fd92f29cb17290bf20ae30. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRIDO2416649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c49f02540e031d6ac31e29bb6b6861882e84a76d5cac45d784c1e88aaf60cf. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRIDO2416651.