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 0xc98fecb852d6d2708a3738e12625f6fcbe78dd311a639365b0c35a468c2aa979. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f224b85b-0317-4a5b-9b87-a57d33353c7c.json and https://artists.proofprofile.net/proofs/artist/f224b85b-0317-4a5b-9b87-a57d33353c7c.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 0xe6dc7324fdd5acd7db289d8b43c07f17d49c891e2b8fec4c871aa4ac6bd854b9. 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/DEUM72119688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161487425fd1a8511830359b56f71f4558161cfca943320424148c91ffe93410. 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/DEUM72119683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f66b67b2130eb9c392dd0d83b29b6b68c4331f6d034e5472ae8dd64c3abd243. 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/DEUM72119401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7761f2346e380afcad2350db4d7dd7ec248522beaef002c06167447571d591. 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/DEUM72117583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21615e9cc36c151b73723916efd95048aef185b7b14b4c80621a3930b662e78. 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/DEUM72100438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6dc7324fdd5acd7db289d8b43c07f17d49c891e2b8fec4c871aa4ac6bd854b9. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/DEUM72119688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8744a396d43fc73bec7487a2117031e591715f8256b25aba4e654a50cd79d91. 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/DEVU52195471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ccad01d2d2e1f699203be30a821fe69d74f1b4be0794c278d40cb561794ba7. 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/DEUM72119687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6dc7324fdd5acd7db289d8b43c07f17d49c891e2b8fec4c871aa4ac6bd854b9. 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/DEUM72119688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161487425fd1a8511830359b56f71f4558161cfca943320424148c91ffe93410. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEUM72119683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21615e9cc36c151b73723916efd95048aef185b7b14b4c80621a3930b662e78. 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/DEUM72100438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f66b67b2130eb9c392dd0d83b29b6b68c4331f6d034e5472ae8dd64c3abd243. 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/DEUM72119401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7761f2346e380afcad2350db4d7dd7ec248522beaef002c06167447571d591. 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/DEUM72117583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2d4319139fd2e6daea204eca0558344a1c9c909f211c207a6271defb8fde17. 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/DECE72301914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6dc7324fdd5acd7db289d8b43c07f17d49c891e2b8fec4c871aa4ac6bd854b9. 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/DEUM72119688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627e98f831a0f27c4f51c8646b24889edfc840902c263217fea253d267091141. 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/DECE72303900.
Remember Yesterday (feat. Perttu & Michael Schulte)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21853e0f1317a969d7ff3a1ddfe8990cfcbdafb030de9fb6c1fa992c989b2849. 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/DEE861600182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9c9237db5284a514e3551d3f856da8eaccef1805337dcbb34a2dc6e87e9462. 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/DEE861600184.
Leaving to New York (feat. Michael Schulte)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc088cc8de019e1eec7c557f66ef5a72fcff538f241aa39e87e37c5e32c680ab3. 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/DEE861600188.