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 0x77ab5c558621841a46d1ad5a14a41e6dccfdc65e9e20b5b998e1803ce14a2d3f. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5fc14a0a-b9a7-4cce-b9be-72292d3cfe5f.json and https://artists.proofprofile.net/proofs/artist/5fc14a0a-b9a7-4cce-b9be-72292d3cfe5f.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 0x1e347f2bcf09c1a907c5c30f512dc33d79d3f5f37a805349f82e8536656472ab. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/GX3HH2347605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3843c252696a29a3e39cb73d6083313805d2cdb36640580ea5c29903cf222434. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/GX3HH2363511.
TOURNER DANS LE VIDE (HARDSTYLE SPED UP)
MIDDLE OF THE NIGHT (HARDSTYLE) - SPED UP
SUMMERTIME SADNESS (HARDSTYLE) - SPED UP
SWEET DREAMS (ARE MADE OF THIS) [HARDSTYLE]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9f79af224ca83e232876593e93ff56c4c250990d63614e7b436941c7102896. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/GX5MX2343105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6dbcf080a0b412386fead200fa6afe9ab85a26b51f4e9f3fa19e01050473d5e. 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/GX5MX2312147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e0c4f804ee36480e9c281bf96e4db16b8008b367c2906ccfca4f656ec6c89b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GXBDS2301564.
CAN'T GET YOU OUT OF MY HEAD (HARDSTYLE SPED UP)
CAN'T GET YOU OUT OF MY HEAD (HARDSTYLE)