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 0x6df4740cd8b91cb99fa032dfb96ea70cb39d676fc3917672cc480fcca91266e2. 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/46906fba-3772-421b-89a9-0a31dbb980e6.json and https://artists.proofprofile.net/proofs/artist/46906fba-3772-421b-89a9-0a31dbb980e6.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 0x87e84ab288626fab05ec6c8999b1e2add15b931dfe8737849081bb577bb8e760. 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/IL1012401670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3685c4d82ec8f218a07c2a2a1d26a5d3b8e94c23feb76acba82d11d63898b13. 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/IL1012401671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72adb3c4123c63fff9a603ff209eb0a01b0dc887e61c93ec14bfac13205c025d. 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/IL1012401672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4396203ebb0f49f0d71ea78080d207a9a5a491782b5bed3fb4bef47293b506ce. 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/IL1012401673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e10fb38cfe4e7eadd54237b95cf97fc665531bf5dbda29de1161eb7839b342. 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/IL1012401674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4f8fa06bd9974b03817ff04c6a34604d0e0a33c40e999c0b2fd4c442647f63. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/IL1012400869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6dd422b2653c4870aabd0db39024815ed45e3f7f8644444c7746d4fa861bbb. 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/IL1012401675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5cba5977f5d59f1ddb13665b5c27395981c6b1f25486864d92f292298da35c5. 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/IL1012401676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67293241c6c680c7359fa3bf469e17c68d7e466e0cecceacdae7a641e0bd51a3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/IL1012401677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e05b9f707042ca8472aa88a8d0b72c86098c11abbf67e71d7e33b554d554a18. 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/IL1012301940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ecd630a97786086942045572ec7c73ca9a997dcc9e2c147747102258d0dddc7. 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/IL1012401678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56cd02d647567ed92a8f76135d4c7309c31d0a647bf20e9df0c0eae3110c925b. 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/IL1012401679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0fc6fa43074179419b7210d4223831e1fb15a3d17e85a93907924d8831fb1b4. 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/IL1012302345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f0a55cf4774df4c8a026f7175c88226064521ada286a70b8ebee2a387da0bc. 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/IL1012302346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5616793265e725e4aebe0368ce54a5da2b313515b06e4e888cfe03998a4209f7. 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/IL1012302347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27fedbfb4c290136eceba18d5048b12c9bf47e8cc5becaecbaa5a1a40961beeb. 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/IL1012302348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc88d992943b99e5349f1e4bdb80de8e4f773aa37ec3bc4806ea8d7ae18da7d76. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/IL1012302349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba970b545d067e2bb6f077f9f72cdd9e5a36db755c7ddaf26226acfbb23b556. 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/IL1012302350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1449191ed96a3a5df57e4e203d227a8e95fd4c675060284d347136b3dfbade. 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/IL1012302351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bec8ece9f2212b8d30729f6aa43ca764603420dd24757e4594e6ed75a444244. 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/IL1012302352.