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 0x23c02329432abef307c466bce58366697319a62cd779106862b3d8284dae3a8c. 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/aa4332ae-3a44-4168-b950-a3b0cd042123.json and https://artists.proofprofile.net/proofs/artist/aa4332ae-3a44-4168-b950-a3b0cd042123.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 0xc5b8907ed962233528657f40dc2e05ecd78976c38df33257b8921425094fe722. 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/USA2P1957097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d8ab6e5a44ce8043783fcc7f988feabbe22be9bb24f41ce3efcda658c49c06. 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/USA2P2109787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da390a8a15a8c20537a4934a69dc4343e25a2de960ddb3dd6002d76dd2925c4. 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/GBSMU6085670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2037ce765a3bda7cc773802cf3ed8d21af05c0e76ccd207b9a89187b4fae5661. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/NL1ZN2402973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dcd3111adf9fa9fbce16c1075e9978fc59828862842aeea51e0c9b1ce1cbd5d. 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/CACWV2487639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e1b1f1b10922d8ef0a94233b59d86734e9e676ea26430aef2b4f376d9638d37. 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/QZS642220106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274ff410ba5b60a8fb412b00a82454b68d350c527fd3e76b2083cf78c60a03cc. 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/QZES82212849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11fd82ee2c3a0be5245cacbc51f0d788e56420805e208cdbb7a961cc05464fd. 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/CA5KR0024058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa22745e79a8a2ab6f8398bd80dc57a49b7f23fadc263c235c45a2d49063ae40. 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/BEIW12100306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa29cfbc757999aa8055cf99b474d99beb1b4b68fbde2180271fa0673718b509a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBRKQ2169665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70707a8ed046c2acfa16f79b9310825e8c5e9857328db981bde339baef25060b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBRKQ2169667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e31d0173929e49c7013f8a5fe7081567fd6c69ed0d993e208acb4ff60a70d4. 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/QZK6Q2166256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe49d9aaff2fc0df459fac415eabf593883692ee7c43bc10780134e257ff5e211. 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/GBLV62012901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9564bec6dba2243e05a208f543e632372fd90397fe7fa2303067b95ad81a5995. 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/CA6D22000283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05af69c3740d00aeaad23cf71736a6493002c2c8edea1a704b72795ca3027923. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBSMU8381146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x819d24d685a4a0e94508cf244ccef9737bc7b32f800e56639bf75398b1f09e49. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZ5FN2023776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a9db78829a29c7e9bf39c7806fb9b653de4370e3ffe5e2badc9c6b2ce311540. 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/TCAEJ1965302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588fc743ba53837445b631fc0d7fc22da6f8baa7a2075f6a4509e8ff9afd9db2. 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/GBSMU6751916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5b1482548f613f7df15fd524c411db9d06c70491c4bb6d9d53b7239a485c01. 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/QM42K1961541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc94db89b4eab1d17104359acd6faa3de4550468ab74e8b3195542401bc3eda3. 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/QM24S1906012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9a1d1ea63477a5ac00ff9e0f5ed45353ef8f0b3164831af8a15957898694be. 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/SE3GO2210501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9564bec6dba2243e05a208f543e632372fd90397fe7fa2303067b95ad81a5995. 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/CA6D22000283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f63468f1e0368e1b86877a93eb710c7a257bb9bce81ff0169d1719d1a160cb. 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/USA2P2112356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d8ab6e5a44ce8043783fcc7f988feabbe22be9bb24f41ce3efcda658c49c06. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USA2P2109787.