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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1254587d89fb4cd534fa2a4c1e2b166e934f45df6b11da738bbedd8efd58928f. 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/b56903e9-4717-4e9a-9edf-0318048bec29.json and https://artists.proofprofile.net/proofs/artist/b56903e9-4717-4e9a-9edf-0318048bec29.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
I Want You Back, I Want Your Heart - Original Radio Edit
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83913867021720d94422c698ac0d51c15774569147e3af8043cf531a3ea1a3b. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/DEC739700933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d62746148c1902f4d48fa1225e8e08df89cd76249e635edc713895b5652f2c0. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DEC739700377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7e05c2546c0bbdf473dc6e6647481213fc08fe1b15e14a94fb502c68bbff2d. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/DEC739700987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba04536dec0928c3515a82bce4c12506e7cc786006137d4ed881218079312f58. 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/DEC739800745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e8acb36e0c84153de2812b8b2272caba508e15aa2d157dacb933f8e7bd3933. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/DEC739800749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb159e07075be7a2bfb00b5d6938e10646cd22951b3e3c383818d6760c355ff. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEC739800752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf7f4ef3df1be3411a6fbf5c4ed698254c67353c13a05b0501f7ac3fd2c80e0f. 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/DEC739900813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ce6ca6759ecb1ea32be83311a560da014ff291aeeb171ca903012be2fde187. 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/CAU118308585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1933152d0740b76b7ae1a717df7b6d8114edd0dba1309d3e661d0a6957a6d12. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/CAU118107227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ad00207a01ecd31a56afbad2bd6385aef04184b1b9edcfcfc9191354ee567d. 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/CAU118207233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1933152d0740b76b7ae1a717df7b6d8114edd0dba1309d3e661d0a6957a6d12. 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/CAU118107227.
Let the Music Heal Your Soul - Radio Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6094b97604e0e5a9e0d876a9d5ec1bdbb3425451beecb8087b4b28dadaffaa9. 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/DENW81900146.
Let the Music Heal Your Soul - Classic Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d2b5219292a025d435ebfe1cea993c0e5d690b8a5fdaf35b906062c0380683. Chain 2 (Bitcoin): anchored in block 957012 (2026-07-07T08:27:05Z), 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/DENW81900147.
Let the Music Heal Your Soul - Unplugged
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dda37b52dcb9c16bb674caeeea390f9386bd49d77e7b246ae5ab62beb887d7f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DENW81900148.