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 0x099f8eb9ccc74d45d15407e691f72b68dc791bb324f3ee04e64aca84d5d6019f. Chain 2 (Bitcoin): anchored in block 953730 (2026-06-15T02:47:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/955413ee-8e44-4dfa-8011-827f177fb149.json and https://artists.proofprofile.net/proofs/artist/955413ee-8e44-4dfa-8011-827f177fb149.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 0x082a1ec828c039b0b20194b003c607ae61911286064fe3d0c5a956f5d64762ce. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/NLS762300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd6869ffd1e583011a28600c05e2f35781008d396d0c3178a4735d6434715458. 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/BEB682300191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeafb0f1a5b54b1c8815f592722f7a43d1f53737382d812f84593c047e9b648a. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/DEN062300553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06116b0ccede78befc41acac826f82ad497923d9853f3b0991fbebf4d939698f. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:58:45Z), 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/BEB682300661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b7a0e573d789a426c9a2cde688ae285a0d5db61cd0a593ff69baa3a246842e. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/BEB682400048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7880cadfffc469d67063931f543024c5c968c14405c428e4afd30131dbc8957b. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/GBRKQ2483875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fcf064cdf2a520a8e06b7a0b20adb54e4db145ab27268df59aa1438f7572869. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZK6M2423915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32addc0dcbf997e293b91dd10e896a5cd71e36e0ac3bc6ef0d991fd524fdd658. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:57:37Z), 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/QZK6M2443818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ff7245d79bfa51177860c285a79ca81ed9e34cd3426b7fd0c59d8329deec72. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZWFT2487081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b7a0e573d789a426c9a2cde688ae285a0d5db61cd0a593ff69baa3a246842e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BEB682400048.