Leod (Scottish Gaelic: Leòd; Old Norse: Ljótr) ( 1200 – 1280) was the eponymous ancestor and founder of Clan MacLeod and Clan MacLeod of Lewis. Almost nothing is known about him and he does not appear
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 0x6a30387e94df7e73fa334ca7981d12ca6565c555f6a904e078cce6c5c94623b7. 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/1d7f231a-21d5-44e9-aea5-7febb27b3566.json and https://artists.proofprofile.net/proofs/artist/1d7f231a-21d5-44e9-aea5-7febb27b3566.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 0x30d904271368800bc6a3e3e946c75c390785c83d016eb9da21617cb0b5fe659f. 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/QZMER2405991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b5bea3b11d8fee952bb05ce7505c6b414e6136e0deecaf8d561cb6357b131c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZK6N2417588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb62fc49ce54d47e9463935e1d8c8c67614d7040ef267eea5fee35b086af84a. 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/QZFZ72494585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0bc0228bb96ef576ccaf90c6781f6ed59b42cd06b492348b1d93c3978d8893f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBHLW2302278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9df482cf487c09b2bb4d0d695f93e0398d03412406d7da16d98f6d77fe0c080. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZK6P2388222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe63b7e017e0096168e7f246c49ae2d3b5c9d37c30bc87eb7d8fa5b8c43cd101. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZHN82364145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf54dc30b41e965953cb1d1cbc3a76b3be2d95531ccb4f896d7c103baacc8dc2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBHLW2302277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0bc0228bb96ef576ccaf90c6781f6ed59b42cd06b492348b1d93c3978d8893f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBHLW2302278.