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 0x06566a41ab587602982c88ed16928c59e1efc8971e9e624435b436f25cf76ffa. Chain 2 (Bitcoin): anchored in block 953743 (2026-06-15T04:52:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a2f59342-be30-4b0e-9082-209386f488e5.json and https://artists.proofprofile.net/proofs/artist/a2f59342-be30-4b0e-9082-209386f488e5.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 0x25bf2766fb2249342d4d75d72228cdf134fef0ed7eded5c5de2e776493f0efa2. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/GTA010700161.
My Way (A Mi Manera) |Instrumental Trumpet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07de5062961efb614755f54f39c4bd25a229121f3a22efc207eabb19d83a4fe5. Chain 2 (Bitcoin): anchored in block 958613 (2026-07-18T21:35:09Z), 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/GTA010700137.
If You Leave Me Now|Instrumental Trumpet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4960a183882b55affbfb0cff9adea552d2f3d20a71a79b96706998aaee41f0e9. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GTA010700153.
Killing Me Softly With His Song|Instrumental Trumpet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb100ca0a229eb3131fd60115ec030eb909147dac4227f254c705dcef0dfd9bfb. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:10:39Z), 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/GTA010700156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795a36f97941725b0d85c9916c06241384747e3fdcc3faaf44d6028a45332afc. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:25:49Z), 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/GTA010700149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68168f83521386905d446790750869a19e1b51016c7fe87765bcd49843daf5d4. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/GTA010700142.