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 0x5c5f88a0f28cf06f79f0cc74dd8308ee74a27f4c97786e366db593cec7aff378. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3b679f00-1784-40cb-8f77-da2aa68fa36c.json and https://artists.proofprofile.net/proofs/artist/3b679f00-1784-40cb-8f77-da2aa68fa36c.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 0x5e3a11b149b0476e02e66fde8358d2a9d7e6c8febb383ef5f04901466eaecc5a. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/GX3HH2379757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf87c5bf8c8384ab4bde0ae94ff9e284d293603320f49e73a6fba47e9e3d32412. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:32:00Z), 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/QZPJ32292292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9b9654d494f2e1b2ae30f8fb4884b83aa83feef1c43388be367e0c555589af. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZPJ32309856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e6c945e00af613d643c96d13b2b1f98c45a4d1aeae84ec470f0dc7d469c94e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZPJ32309858.
Bling-Bang-Bang-Born (Turbo eurobeat remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf38db4914d19973fcb5e0271862fbd889cc0299a045469d04726d383492563f1. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:21:51Z), 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/QZPJ32408902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e899756e5ed10cae16e5b1a740189973fa0ed9281dc2aa8f30dcc7dff8b198b. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZZ7X2564568.