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 0xbf8ce4f2a77c88fe52d18dfce01828f25afafc471a55fa6dcf14a1afbad57c5e. Chain 2 (Bitcoin): anchored in block 953610 (2026-06-14T07:58:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/12b0f653-43c3-456e-b136-d00f54c37b04.json and https://artists.proofprofile.net/proofs/artist/12b0f653-43c3-456e-b136-d00f54c37b04.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Richard Branson in the Sky with Diamonds
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 0x8555b5cb279ad9e6fef09ad2a0b384c13e013404748cc9c8d2237b57dbb19903. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/UK9AV2100773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93bb49a3429af8a4898deef3c33a55a045f6e145313184c1e22a9d00aa18c298. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/UK9AV2100774.
Terrible Things Are Happening as We Speak (CLT DRP Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a42ba2901451e30125919b6f95267db01be377b1af8b0af03786fd90ac9dabc. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/UK9AV2200615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9650cadde235ff356c0459da99b7a789368a7d7f874a271dd05090cc12eb5b. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:23:20Z), 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/UK9AV2301300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646d14192ed54668a5ae88a1deda42814e5cef377610cdefb43d17888b892e12. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:47:44Z), 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/UK9AV2301301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce75c0afa2c515388f1bc6ffb8041dab4c7a39dfdcf04baa6e6ebbc52f09a3ec. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:47:31Z), 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/UK9AV2301303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9abd1dc2a9ff42561f366c3ddacb359327e62e9c0289dd679f503662bb730f4a. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/UK9AV2301305.