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 0xb7453349de0ece07feb62bd2b8e95ef120e6586fdf8d4aa42fb85f397569b692. 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/a6487558-08e8-4254-9e38-6053724903c0.json and https://artists.proofprofile.net/proofs/artist/a6487558-08e8-4254-9e38-6053724903c0.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 0xbd9fd5d94166c79e280f43df546fb895c701095ce896362c6cac03957abcc84b. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:41:44Z), 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/BRXC31700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4cace9502906d7e9eb86da403a99303e28d4e90208b8eeb9ef592df073adaf. 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/BRXC31800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29225f06158c49a8fd9598b007d3565cffa072a9d003464ba44a3bba609f610a. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/BRXC31800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f805256e427d088a35ba17f7f20ca52b37a41d49f906af34dd70b53d145b23. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:35:08Z), 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/BRXC31900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec590a87f9355fd1005d08f553fd53da8526a7def2356e8ba2304e03b6201a3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BRXC31900013.
Depois da Tempestade, a Gente Vai Ficar Bem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f16599478327721b8e90b6dce8989dda2408e8db88dee44fac273dea3d73b7f. 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/BRXC32000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd76dc9f56899a9fb53fc3c604ca5dca5780a9533aae79ecc210e2d3e7c460d3. 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/BRXC32000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdfd0095ea046bc9cf351de4096cafaea25a5f15183a1c3c4a26f9145f9361f4. Chain 2 (Bitcoin): anchored in block 960155 (2026-07-29T22:13:32Z), 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/BRXC32000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b06ba27e0f550edf5b9edfb007f96edca85f164e4e8608651b745696be2784. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/BRXC32100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7207c6eefb4a66ffd24a7a798170f8a9588d1ae290b59c4e4a9b5906f809ef. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BRXC32100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc5bb8fd81fac8de132b4002cfd5b8b3ce42d601d0d29afdb5ee22a00622320. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/BRXC32100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714d4ec2e36f7c48b7a18addc2135bbac2143bf4c3ae7c2b19c573c372bb59e7. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/BRXC32100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43db9a2fe96ad5f86abe4c224e84960a89e5d2a8e6b2d66dead76ecfa4c4fc98. 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/BRXC32100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dbcac010ff22673234311515ac498172e0a13b61c18276f8d0b927847b950af. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:04:17Z), 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/BRXC32200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3efe6b6d3c675e0120f9358d0a73f4a08b32a29576d55df36b659eb587033a04. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/BRXC32400001.