right|thumb|Ben Nevis is the highest Munro and highest mountain in Britain A Munro (; ) is defined as a mountain in Scotland with a height over , and which is on the Scottish Mountaineering Club (SMC
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 0x1bd7b87cfe2b7956a904c75c92a39540c5305d97f2277e4d417798c91171159f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/55aa9f07-ba81-41bd-8bb2-7eca2546c7c8.json and https://artists.proofprofile.net/proofs/artist/55aa9f07-ba81-41bd-8bb2-7eca2546c7c8.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 0xc5dd44ce28e9f58d21f8ff5c2578372b3a597242fa68065fce3f94aefe3f7646. Chain 2 (Bitcoin): anchored in block 957826 (2026-07-13T08:56:09Z), 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/USA2P1919229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad417bf604e078d9958bbee6c2fa1b84ea6828af0431a9cdde142faaf22c5c4. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/NLRD52339946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a4487ed8add1fcd02c7a9e8b494a61b507ffeaea2e6d60cbda8f4a2edd3377. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/AUDCB1702731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5536dfab3c90d90727a75ed2a627ba22bcf192e644b9ddb46778b7a352c97d24. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:17:20Z), 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/AUDCB1702809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236d7877b366cb2e9efc95823082ea87b3ee9b2ec8c217ed061fd87e2cb2180d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USYBL1600940.