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 0x9331c4367fa3b7e12531e471e72e4a384956f487863013d978df8fad7c873a80. 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/232a7fce-b7c4-4373-b96c-8a0c86790ec8.json and https://artists.proofprofile.net/proofs/artist/232a7fce-b7c4-4373-b96c-8a0c86790ec8.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 0x388f94b221815fdb352cd2ec77fbfc92047cec42bdcc2f50c9bf4cdbd4a0efdd. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:09:46Z), 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/TCAFU2114645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd868e287ad6f31f3b18e873d8311ede3a985e0482066b5494743e23bb327e6. 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/PHW012300315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa294b61255b1620dcc62d401ed56bbdbc7e3e0bf82207cff8847cab57250c907. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/PHW012300345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb483d8a645fd5a87219ecf44156fa8097097c6120ed12226e19b6fef4c3fa0d. 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/TCAIP2453691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d504a14ea84d4570f327ad5fb466deec5795362ef8a4b8213a5b2dfd2ee251. 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/TCAJJ2534237.
TUNG TUNG TUNG SAHUR (M.R.Z Music Works Remix)
TUNG TUNG TUNG SAHUR - M.R.Z Music Works Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3594f19bf9485e28db70a39819714d011d99143e3a0fa29831942706b3d93fb6. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/TCAJR2542469.