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 0x1ec8dc212a3ee98986842f70049e71e973d2a7838843b42bc387652de32c9d77. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cdf6c79e-1c7d-4ffa-a49f-860480a9e70f.json and https://artists.proofprofile.net/proofs/artist/cdf6c79e-1c7d-4ffa-a49f-860480a9e70f.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 0x9661187de576fd5bde90aeeb5b0fd33db1a2d7f0ec793817a1304b11dbf48b8f. 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/CA5KR1822381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0c9fdcb793fe7bff008ab87495d6c35fbae0c50c7505163d63f9fb2a9d9533. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/NLCK41035581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f373c85112d3c8132a9025d04eafa925bc7cf5f330cc999f0f310779882ae3. 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/DEHE41600070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5caa9c7ebae39818442a2a1ded7b238573932b69c9d792f623e0cd8959729f2b. 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/DEHE41600073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0e4efb5b8d3ffe5c0a2a745f4495e49f27797f0cdd88262b0c9ca9ec79e522. 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/DEZN82369184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ecf6039115f8394c98a2035ae6676f1002e0939cea6e4c6904b57fcaccd5971. 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/DEZN82369185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169c9fa9d025dcc686d872e8b9d00f22caca0b2783d617a7be710ba9992d2645. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/CA5KR2022290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7d90179291f5653f08f636785ce2cf91ad870d3ed280d8afe578955bc97bf0. 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/CA5KR2022291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a2a7ef85de8a6d52095560ab450b43144e3cef3c321f630c26890d96f3a46a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CA5KR2022297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca81c499fd42652c8f9334179d633498f886e33ccfc759aa2b2bab2f45449ba. 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/NLF711708712.
What I Do (Y6 001) - Burnski Tulum Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42fbf29cd1de3c6f158c44d7bfa9f684082cf79176a57da5ce5598207f97dfe8. 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/NLF711708704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f35981da07141f465a7fb461f6ca7e5400c76cbf98bfe21023917306f62527. 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/NLF711711940.
Retrospective (The Final Journey) 2015 - 2017
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0e4efb5b8d3ffe5c0a2a745f4495e49f27797f0cdd88262b0c9ca9ec79e522. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-21T23:06:22Z), 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/DEZN82369184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ecf6039115f8394c98a2035ae6676f1002e0939cea6e4c6904b57fcaccd5971. 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/DEZN82369185.