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 0x75dfd5275a0598e5bc4a2eba5e5ecf3ce698903e010e871d5a40350ea9b4d187. 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/d5ef16fe-3b72-421a-9243-a3ce393be60c.json and https://artists.proofprofile.net/proofs/artist/d5ef16fe-3b72-421a-9243-a3ce393be60c.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 0xa3df4b19bfe6d8757f3101a1a8ce96683a5de55a423fe3693e3764a9539228cc. 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/DEYT72300113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a1fc9c45f26275fc5906a044abc6f8082b135d1759607b8d5e9c0d04b5c6eb. 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/DEYT72200344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8651bf7d48cc2394b760bbae52e92b3b622a4981985d1150ce1dc19d72688064. 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/DEYT72200241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761d5bafaacdb3ad0d01d1631a56fa12229de42685df20ca0066953e711843af. 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/DEYT72200216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7a109616f5897575015df5c620b43272568ba3140646f66a9e679fa4866f59. 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/DEYT72200151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918efb37accf4ccfa6a48f2a77d7be19498ce4f89e51dd2c5152221a718a5844. 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/DEYT72200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa78a2cab1c2777600b88affeab4470b63c0e9c5b11d4c1b7eee3ab693696e3c4. 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/DEYT72100681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e0776f7079603c3c913708ca41a9d550881208e15bf970da82c6675697b4cd. 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/DEYT72100668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55975e4b12fb9ceb470c3e15c480d2d7fb3b58d3506b5fdeb40e24dc8800fcf4. 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/DEYT72100567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22502db4ab22a858d9af605fd5647312cee2849af8296feced13a3a15e95aba. 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/DEYT72100529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757c55bc7a9c8ecd983c21fc30a588c0aad8bcf4f18f44a8cb71ec84124f8d35. 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/DEYT72100494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b156775860d9a79c031627437910da8e4ea84f9ff808fa084d5cf725192481. 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/DEYT72100411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62dd97f509c80bc03354b3e46f1337838c0955585c67d84cb2c0085e3efd7978. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEYT72100388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd9349da7557e66a9b2776796f958279a2d6357f3c8d3e495900bb742ab729c. 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/DEYT72100355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ef46460f1dd2223f744c2e3c52d673f9e8b4c571b6c742d1c5878c4802d659. 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/DEYT72000276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6bd96ddd98164df56ff02f839265eddd8f48d3f0ddbace98cdaffd652b0125. 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/DEYT72000227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2717c6fdbc99156b301303fe863130e48233db5cba808addf82c4b6ca5b625. 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/DEYT72000182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe257c77d6bf4777a3a9bb8330b01c57e097f0d451336d31dc21fe72088aa087d. 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/DEYT72000098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774ef3219409cfdf20c1a461eeee82bbe840d6a79768a09ddb5fdb807e6a8eba. 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/DEYT72000068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4504e97f5d5ba63a04737382f682b2b2d5013b5850ad2a6b2a8698a3f8bb959b. 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/DEYT72000043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ed7e308f2e1c8e7f695e1c1a1e7b93ddf5e5b972b22a037397d9847b76b5f4. 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/DEYT72000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ab1fa4367e9d272bc90608fefbf52c15a13ae593b61e6e6b2e7cc27bb87b59. 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/DEAX12000090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73921d5ac11fad317b249a143ad36848bab19c95fb436bf1d00f998d3f027b94. 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/DEAX12000098.