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 0x409f56463e416a953b0145a99d1b545a5884ea6a6b7486eff9a21017321cb218. 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/4a58e84a-616e-4814-a8ad-660bd410fc5b.json and https://artists.proofprofile.net/proofs/artist/4a58e84a-616e-4814-a8ad-660bd410fc5b.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 0x5cadc1cc057955271b0bb4a549dd4a52d27ef708371c20d3eaf34ae63bc546e0. 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/USRC12103218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48163963eb85028ac94229e4f204ce972f0ca2d862831f3e236498e8ae313b01. 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/USRC12302446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9952ce6d3ae7319f6b23a66510dbe22b497864b97a6b6dfe5ae6ff5dae3407. 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/USRC12303181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb206b190865e4fb547b613b865ac2bb6c1ba8ec60cc3fbd765cdd70039a08c67. 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/USRC12302156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f31c3bc39af3528e7a95788138531c9b682f605f5fcb70d276eab8e82e4c45c. 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/USRC12303185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1aa5f393984c13490b7f1ad64c9b1d45a9844ba30b6c9f59b8f4c53cb6a96ce. 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/USRC12303186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7669657da15a98f8993c3d766ea69778f1ff3e5dbad393c0af3461e74f0e0b0f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USRC12303187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48163963eb85028ac94229e4f204ce972f0ca2d862831f3e236498e8ae313b01. 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/USRC12302446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42fcfae1655a5b19867bed81529d3aee06dd2451ee00a024587130eebc54abb. 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/USRC12102790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cadc1cc057955271b0bb4a549dd4a52d27ef708371c20d3eaf34ae63bc546e0. 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/USRC12103218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0607343ef70c5dfd1a718725156b36e784706b3d0e3b340ed32df0d3da9a2217. 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/USRC12101208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee722aaa7a41c269137a4699cdc1ac632b3d9cd1c00fbeb898d3b38a7ff8106. 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/USRC12002314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcadadff353813407f56af4b88fb7d1e90844e7cbc0a982104769395d2033b657. 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/USRC12202466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec38c22c1e821f90835d027626f0de7fbe260cef8642b57df517652fab4ab8f. 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/USRC12202297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb038e4fc830d4f17248249bba6e43d75805ae646b27447c7b57e731281bc563. 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/USRC12201409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260ceaef91111bd646d1a9a438300d4921e8b5b981cbe016a9dcd751525e5df4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USRC12003399.
Rainbow (feat. Young Nudy & Bermuda Yae)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66acc8d29865feb180980e1d774d1c979d5ffb2ac9db6323eba22bc0c0a093f. 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/QZ5FA1753464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97428b99507bfa13929b67aff3f243cb6c087f85629ed9f432ad027052168629. 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/QZ5FA1753384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x472d3605d6252e53bb8513d9241ce24ed65b7bd6204581ba5aedb7d2f650e93d. 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/USRC12102286.