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 0x33004da50b5ecc6853dd5db30065a859dbba2da9336ce7c0d6afbdd7b7ff21a8. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/106f4fdc-e8ea-4f0d-804b-682b3cbd7068.json and https://artists.proofprofile.net/proofs/artist/106f4fdc-e8ea-4f0d-804b-682b3cbd7068.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
DJ Papa Pilih Mantanku (Slowed & Reverb)
DJ Ces't Lavie X Danza Kuduro (Slowed & Reverb)
DJ Cuki Cuki Mashup Kane (Slowed & Reverb)
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 0xedf495591500c5bb4d2195f3f987d40aa7046624f661c06e1e059247cd074781. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZN882355856.
DJ Desert X Tangkis Dang (Slowed & Reverb)
DJ Old Akiyak Tumanedang (Slowed & Reverb)
DJ Sanfonamix Mashup Kane (Slowed & Reverb)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79817e30e92dbede84f9fd2f7d987adb742a0ef6c534a210694d8d42cd4a5a55. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:03:24Z), 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/QZWDW2349844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74f28e6869d8f1a4575f7e84dde31b12a9e7ccb397b2a11a08d306edf3e309d. 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/QZYFZ2302287.
DJ O Aja Ya Kan X Kesel Boleh Slowed Reverb
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7db62c8f612e8b1dce7da77822c062ac8b1d976cfadcadab2285bbc69876682. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZYFZ2317917.