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 0xf8b2d3c4c92229d6f47bd59ecb69bc26bfb6174104b67b82d58cbf315acdf0db. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d069e7e8-634e-4704-b750-6ffd291b499f.json and https://artists.proofprofile.net/proofs/artist/d069e7e8-634e-4704-b750-6ffd291b499f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Well Known Guitar Tunes for Moms & Babies
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 0x3e12b8c984be795be376725bcfb7ba976cbe4e0c94f381dc1be0dabf7418a28f. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T01:53:34Z), 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/KRMIM2009692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477e48288517a47882be57a58db895be686394b00342d4b5d34c146f29759bbb. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/KRMIM2009693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d3db9db9a48e36766798641cd49609446a914030feebebf2bbf412fcae1739. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/KRMIM2009694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03562ecb3340a79e2292c6924d42e7b1e8fde87f547cf03462127381d78d91b9. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/KRMIM2009695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27333cb7566d6df692b814a77458a5dd3e08ccb5e7f9e785138eef06e656b14e. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:44:32Z), 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/KRMIM2009696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede5407b025aa1339287de817fcae01be92b113f5ab61d0292406877bf8d63d3. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/KRMIM2009697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f52ccf5f9e3787e42d6b1f5ac530ec247bba5721d1791d3cc69335a04c4288. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:49:25Z), 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/KRMIM2009698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc41c4223f28a4481cd0133c5b74b1eec22ef27df0dec62db3e77b09c08e02f. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/KRMIM2009699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac1a7f1249a262fb6c09843f01b7efb12b4f45be445e11dfdea5550a587dde2. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/KRMIM2009700.