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 0x090f2608d4572dc9a4e77aaf478083964a40e8b27932946c70cb7406039b112d. 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/5565d26a-d86e-4ad3-afbd-a50d0b1a34d2.json and https://artists.proofprofile.net/proofs/artist/5565d26a-d86e-4ad3-afbd-a50d0b1a34d2.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 0x9c1ec69e336e3cbad62657c4852203f38e44308231397787679cb6e9c869f3ff. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/ITAR31300107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e9324149e3b9b6da4a9a57fc41c04e4810497bb7ee89b5de5e488733da4686. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/ITAR31300109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25041ddd7e6876f65ee9acac058110744d1ffdeffcf59fd30c2f05bae314fab0. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/ITAR31300110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeba515399a5aa2579d31111d25bdb304dcb97ad5778e61bf4239d832a989322. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:38:21Z), 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/ITAR31300111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55191459077f6fc364acd3d28c170b98efd1e8374adf1aa442f6e031982bc0cd. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/ITAR31300112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c709a6770c2f8e792ddeb87a73a8a4788d7740689bc25408cb635261a0c6d21. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/ITAR31300113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb113f995ba4f2e8a5c596440e9857c7c19c83bf48166fda8bba90917d35df794. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:01:02Z), 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/ITAR31300114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeadbae81da2f32f7f1ed8c423946d253ececf9dc732d4cee8e9dcbcb48275e66. 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/ITAR31300116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b233e7256c45512bee39c485de45f9d2f9183d26283dc5e79883ea8be3eded8. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ITAR31300117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d9f8aa9e18f856549bb3d3a6c2ca501dd883800e3c30c39de6a64486a86159. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:54:18Z), 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/ITAR31300118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463ad825da585735570fe3e016fcffd095d90b1d1d6dbc4f1b28b14c5b865dac. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:50:15Z), 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/ITAR31300119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8b3b3cd2982d85c2f84bb08c8bbe43053420acc9961d122d1de673e3d3609f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ITAR31300120.