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 0x71a3b27c2ec84a604a0b177d42dbd2a6eebaa821ec9c08c9b7041d4f6f43ebab. 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/79811d60-903e-4efa-b314-01328e6d3843.json and https://artists.proofprofile.net/proofs/artist/79811d60-903e-4efa-b314-01328e6d3843.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 0x6bbc2f211901926d1a7e32b89fd4a594b900689c7dda8a37b8212fec9ddded69. 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/DEN062100571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d654443449373bca8698b6391f64f2a515667c2cc01b95e1cc3a1f31254ffd. 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/CA5KR0013417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a75ab808356586980d12810ec0db990a0e041024e8529945ed07969d009d175. 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/DEN062400329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5db8348b0f062bb32f590fa094df26312d52316e83d3f9228984d6bfb7d720. 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/DEUM72403473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078548cc361ddb01c6582d3fe141e84f94595650ca21293a7bebecbf0c908e5f. 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/DEN062400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d56a562dfce9415d295041983001d992412820f0c270951317f75b6343a7d5a. 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/DEUM72311718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3cf7784d6b197188adbe88410c59b323f4d7bda265948ca7c75ad6a03f9f84e. 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/DEUM72311294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55289d92161d51113728f62651ebf2078ef59ed68ae89d6c8f75f87e8713475a. 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/FRX872397570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x656caf117acb2c856d375c01de96757e4ade9d1ecf91d90431e1dd064a69c045. 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/DEPI82210693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084434a8ad066287cc4ae71dc913ab1f66131e4e58029e37505f2370e5972099. 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/QM6MZ2220771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4043e1e4e881315f3625f57c72a609ae5fe528af34c7cee7f98e38d68662d06f. 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/DEPI82104401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec847ba9894f9b353a47b20e587fd4b21f1648e0c1173b9be7f671c6d08449e. 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/QZMHM2032243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3614f7930d43e1036be6de261bb103ce0f1889b10f5a9122b153f549e6312ef8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEE862000877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb9751263be9467af6f65ab6267f2412345a19d804fcc54dacd7bb70bee1805. 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/CH7811932791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef716f793a8b9435a894cfd0e2291bfda81cf4b03d0543c2f9e93970c7f1ef3. 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/DEE861903140.