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 0xc3e177942e0140e3d35d2a8a2fa52052e111c3f781833d818d4db939cd5e2663. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ce6422dc-6132-4686-9cf2-bd0f78f3b6d7.json and https://artists.proofprofile.net/proofs/artist/ce6422dc-6132-4686-9cf2-bd0f78f3b6d7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Brandon McPhee Plays the Music of Sir Jimmy Shand
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 0x697c68d6d694c95ddc5b23f82346526e409c1f97236fc7883856cdcbe96b957c. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GBMJG1916791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a4f8eacf6232552c6c79783fcc39a31e9684241369b1bd1e84d437df627f98. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T16:49:24Z), 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/GBKZQ2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d47168299183cfecaf6abdf9f88a25b7924da4eb81d7d864fdcb800096c876. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:54:14Z), 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/GBKZQ2400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83d8fe1c05ff271e3e77bf4b93833d4bbc984530a27aa26ff455fcd8a9615b6. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GBMJG2515390.
Brandon McPhee Plays The Music of Sir Jimmy Shand Vol 2