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 0x3e61853f0ae51c0d0ef26031cec04ba75358c83df0398b98fbe984441093d53c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c525d565-cf7f-4509-baa0-bc0ccabee03e.json and https://artists.proofprofile.net/proofs/artist/c525d565-cf7f-4509-baa0-bc0ccabee03e.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 0x2b3ed1851b06e95cd00732246411fc2968d917aab888dd1b82245beb7af5fa2a. 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/MYA119700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa107e70718118819d17b1490d5a2e5e0c752093f53595bb6dc5d80e46525aa. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/MYA119700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc164a0ce2bf6594ae3612b1b863b677ba7f6d5f3b96205300c1b5b53a8d5c0d. 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/MYA119700017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75a0148c6b092d59f2bbfe4b3f57adf3df522fd7686e893026c68c8c255ca4b. 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/MYA119700016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11bfa87a24c6bef0ab6be5e8076d023787537c190f8594794c49484625c94307. 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/MYA119700020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75a0148c6b092d59f2bbfe4b3f57adf3df522fd7686e893026c68c8c255ca4b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/MYA119700016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc164a0ce2bf6594ae3612b1b863b677ba7f6d5f3b96205300c1b5b53a8d5c0d. 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/MYA119700017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11bfa87a24c6bef0ab6be5e8076d023787537c190f8594794c49484625c94307. 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/MYA119700020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25dd7adae904a69800c452bd178ca94a226676e260037b0a812a4ca938af0ddb. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/MYA119700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f856347a498fed0ff00bc6c729d2ab7050390e46f1e0632a24df9c9ca89763. 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/MYA119700018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4527601c754b91a32717af2dd01a9ab0d148788f32987c2686c2455832c4cba0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/MYA119700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa107e70718118819d17b1490d5a2e5e0c752093f53595bb6dc5d80e46525aa. 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/MYA119700013.