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 0x82cdd021cd6fe66c7deb4074a9d2c1e2f2e736f7e48f57ab3e75707737dc070a. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9eb302aa-d963-42b6-915c-23a51110ed98.json and https://artists.proofprofile.net/proofs/artist/9eb302aa-d963-42b6-915c-23a51110ed98.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 0xa949c19eb1ebf2438d5bdee7950b5c724bb67a2014589f096646ba589d4d3529. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/NL2J92401208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322f7c4d342ffe79591c93c292fe61c5eace5a6b7c3e305fad8fb855144f5aae. 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/NL2J92401214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa61e50d275a352840f46fe54f2bfd4900bfb7bc5b68e09c9ebf0201a1a98213d. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/NL2J92401217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195422879815c63e8d8b39687bed4c7b3fe57498ba8fcacda591acda4658ea70. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T17:30:17Z), 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/NL2J92401875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71356b2e2d3c45d63894cb611d91efad64c7eb5a498129cea7fc4cb00032e10c. 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/NL2J92401877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed83b6e010afe6ff24276c00692faaa2d15946db46a73cc4de7856ee36e19cab. 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/NL2J92401883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771d660e5e0d13734eea22809884a8d2fe3278a1e7e8a1c8903762fba896d033. 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/NL2J92401885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f34969803dfa6d5bbee00430fcc86bc03e25e85cd16d79c964e3bb8486ed5f. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/NL2J92402669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72f27c9d3eb8adb8b6ffc5e4e2abfc5d72e39b29957689308d58675e9624985. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NL2J92402670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed8efc2b4fb63392596cf48eff8efba23136edb58a1ba21bffc846bdac5fa5c7. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NL2J92402671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c015b0ae161bee0dc8a2bca927f2b9340db50793d2152d54ca456ba742ae9f9. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:23:53Z), 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/NL2J92402672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7bdcaed633dd9056553e6195de5f84ff29ec4b5ee28ffc903c249d8bb17c15. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:09:39Z), 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/NL2J92402674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1167ede7a1abbfa28c9e1027006bd958956b5fabb8228589a93e3de1184425bf. 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/NL2J92402677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafaeaea0f4819cd29a9de26c4c62091be2a31cba1adeb2d0f7a4381a7a3ab9bf. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:00:27Z), 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/NL2J92402678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155a3d5e2afeeaa1db70596e60f226834c0b1920fcce25f40af3feeb9695fc07. 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/NL2J92402680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58430873ac382dcb10ae73c5a5628aa200528154d9e7ecfe73154395e2e3470b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/NL2J92402681.