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 0x04b760634e805f7d48d8196ebf62548f1d7fc3b00142645e9a0354a35890ef69. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b9731710-c9a0-4653-bfef-1960164ef8e6.json and https://artists.proofprofile.net/proofs/artist/b9731710-c9a0-4653-bfef-1960164ef8e6.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 0xcd11d4654cbb959981d3d728f2a7dff8b9a85b3c48bdb0377b24cb40a486fa71. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/TCAFP2102830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc506252f4869fc7cd514ba7f84c521c814d20bcfc8f1a0d7f35fbdbb3fbeaa3. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/TCAFT2116311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610de75c45ca78ee1e7efe4ffbce0d7c3bdbf6c6e9a1aef74b810718a591145f. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/QZNJX2230826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4aedb3c9c3f61503f8f6daa6a4c5a1c6beda01b89c7a6fa51660ddcde1133d. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZNJX2230900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe736ddc5df8572dcb4fbcdc212526bfb648c33f6b1a088123bbea80d75b6e7. 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/QZNJZ2381605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de2a7860e4ee55ed9016fb9d8464ebf118b175dd5931d58a34902226b8da048. 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/PTVI12400958.
Commando (Mapopo) - Remix Full Bass Viral
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e45f58102595c8372ca19cf1851100cd44c85dd638bd0a698a99e0ac635d796. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/PTVI12400965.
Commando (Mapopo) - DJ Mapopo Slow Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb89367ea51f533df921f2c1afd4344dc5dd570c65377dc55ed02f0f9279323cd. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/PTVI12400977.
Commando (Mapopo) - Stenly Fernandho Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233c9233cc0dacb67ed99b56a347d0282db55769295c1e9dd406425c8c6351da. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/PTVI12401025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901de200e601e9cb06ce998ae92f19c834cf17c837bc911c4316df183b8c3511. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:10:01Z), 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/USUYG1763444.