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 0x4a439da71fde95a8235a1613e6840cbebc5295206bcbd6acc0fe4e2e925f84d2. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3b7d7ede-46f1-463f-bcea-5705696132b7.json and https://artists.proofprofile.net/proofs/artist/3b7d7ede-46f1-463f-bcea-5705696132b7.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 0x672f4e336b08031a80d188904376b27ee2a3ca6a8458c63c14e55b571708f689. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/NLXH41300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a4eb0382e4608971df946258018a487866bcce1b18df3030f5fb56b0679b9a. 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/NL5LG2100013.
Everybody's Got to Learn Sometime (Acoustic Live Session)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f08b613cc454b60f355535e6d92a24897f65ae4b52a3417e09534e24d381fe. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/NL5LG2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0023818e1e95b46b3bc0700937159c90c0d0d1f49d494454a60128cdeb153b49. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/NL5LG2400003.
So This Is Lonely (From "Life is Strange")
Life is Strange: Double Exposure (Official Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493fe13a8f2baf893917acb9fce736ee63cd2d515b8e75dbbf85a8d0d8b400b2. 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/NL5LG2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14179bc070831aa4be601410543c70fe27c418c395e1fabaaf74e6a81f4fbad1. 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/NL5LG2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112fd471c47a43c9ae9b497a3b050640c267f4371d83a6b85e287c5e8af93c29. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NL5LG2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f08b613cc454b60f355535e6d92a24897f65ae4b52a3417e09534e24d381fe. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NL5LG2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0023818e1e95b46b3bc0700937159c90c0d0d1f49d494454a60128cdeb153b49. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NL5LG2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff7b77dcbfe64542a0fe4917602e406d8c04bbb7ba45f075148012b17f37074. 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/NL5LG2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3dbe8b869f19f34cab2ff5e44fca031a68f8bccc4bc131889b0b25af9e44e7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NL5LG2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278b95bd139e54d9a1d1d6cc9d92568231dc35f82ad116391c89a17edee388a3. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/NL5LG2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0f578e2f33ffa4d4907a92048f9e0fdf0f54002148f9259f9479ea7db190e9. 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/DEP961900033.