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 0xef5293f16dab784d4ade17069a1395aaf598f6ab9d17429b99d05d13a694acce. 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/30f9f5dc-5745-4213-9b99-9bfee173353c.json and https://artists.proofprofile.net/proofs/artist/30f9f5dc-5745-4213-9b99-9bfee173353c.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 0x2e149d9dbc48b62f12babb814cc089c4f4dc9ad2cd18590ebfb9a02ed758f6e4. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CARK11502207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8211973b19948c9ed24a31b84b1c0a7899f8cfbe60d348f684a96d4237b346b4. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/CARK11702542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f13b5539b925909f47784b1ae5598bd7f37f9bbbb4c4b557d649911d79df8d. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/CARK11702547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x433a3ae5b9730ca41dc5c91833c1fb1a4812025cbe8e13835416a532d2d87341. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CARK11702543.
When God Made Country Music (The Barn Sessions)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e84061d03966e2e234f0e7c9890699719a942e7586c3601e0e8dce4050e39ed. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/CARK12202881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdfd570faa8299fc180a1f8021111913b5dcc8936ed382f7c200a21cad1d5d4a. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/CAF592300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa072247101eab56ef1185dca652244de597b82508cf6da2035cf3911252f497d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CAF592400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa496f5a2b3ddf541dc6c44bf638da2614067cb488da5ac149784d7745392b853. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:09:30Z), 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/CA5F92400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdfd570faa8299fc180a1f8021111913b5dcc8936ed382f7c200a21cad1d5d4a. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/CAF592300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa072247101eab56ef1185dca652244de597b82508cf6da2035cf3911252f497d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/CAF592400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e84061d03966e2e234f0e7c9890699719a942e7586c3601e0e8dce4050e39ed. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/CARK12202881.