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 0xb57b40348a7f0a7f97c615c03988bb99912733ffcc774ccd397bd3ebe93a3d6a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/745d123d-0cfe-4c8e-a54c-fda26069d263.json and https://artists.proofprofile.net/proofs/artist/745d123d-0cfe-4c8e-a54c-fda26069d263.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 0x4811eefc30ee83874e8a5a742c2045b1525d759bf680c3e8a2b11fdeae025e38. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USA560672280.
Nuthin’ But A “G” Thang (Instrumental Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc07c6666df938b0b51cc69ceec52e7648102f5914c749d25242a0c909ba44c. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/USA560672282.
Breakbeats Drum Loops, Vol. 2 (Old School Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x673529063b1ed6084dec8437308ee393e7a21e9fa15d044d48734af0fec8ce66. 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/USEM81200313.
Rare Breakbeats and Drum Loops for DJ's, Producers, and Cool People, Vinyl Collector's Edition, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf03833097f3754318a156050d3d94d4785393b022f268847dec96f11d892403. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:13:59Z), 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/USEM81200288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb17e882de2c2de0fdf14698a3ff61c7805fcc89997539085286d9619a25e45e0. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:31:16Z), 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/USEM81200289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f9e9650c27c2e4891b444c84af0277730a18f4651fafd6fb79ec765b6fd430. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:21:07Z), 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/USEM81200291.