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 0x01e86f46829f17c0d2b01abdbc88eb7edc6856ae251874205dcf709c546ad7b4. 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/1e4ba02b-6ba5-4285-836f-64097df677b5.json and https://artists.proofprofile.net/proofs/artist/1e4ba02b-6ba5-4285-836f-64097df677b5.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 0xd204cc9847be8d212652b967fa1e52b3255f715f7fc4855a47a01efeed65d0f2. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:53:21Z), 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/USCGJ1059620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1668158c9978ffc8d6858576203d695e6c567b7dcbe917de77fc6efd7968ea29. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/USCGJ1059622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16bd4a100c404a983f81b318b20cda654d458258c764c9ad2ed25642a90c26d. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:29:11Z), 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/USCGJ1059625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade42355b8eb21776d430e1bd7a79cc69227fb91810773f1be5195caffaa5af8. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/USCGH1615671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c9081c771fce6f43dd7f8d4aaa8919298231ef7f83c44630a74447d8839e6c. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/ES71G1821505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86c540978e2cddfc9f7ade5397cbce27561dd8ee4ad22d4df7b2c9e82e7bc12. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/ES71G1821507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b1f62afe14ae8f3ca4e841c8060c4c1caa1b00470a9f35a8f7b127c8bcef974. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ES71G2006188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31347ed3966ef153ba57f627df43d764a166dff89095d158c39123016ba20937. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/ES71G2006194.
GuitArt Duet Tribute to the Great Ernest Ranglin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e584d3bb997148de9c5cb5de95c86cf539088e9704d79578fa440341bb0c72. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:29:56Z), 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/ES71G2333533.