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 0xf4973d62bc6e60ac7811940eb26c4e20142778b87e0cac88853b94676e107fc8. Chain 2 (Bitcoin): anchored in block 953709 (2026-06-14T23:31:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7db086ad-e6e1-4b9b-802f-8dca614cf595.json and https://artists.proofprofile.net/proofs/artist/7db086ad-e6e1-4b9b-802f-8dca614cf595.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Comptine D'un Autre Été: L'après-Midi (Amelie)
Timeless Piano Covers & Instrumentals, Vol. 1
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 0x8d416c22b22823dfc783f1a1c3148bd26e3ea3a23954b87096b2c3d709402652. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/DEVJ52000030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9340e33caefba1c8f5ea71cfcd12b0d3c2972b6e69e81b73836a8803d041307. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/DEVJ52000037.
Timeless Piano Covers & Instrumentals, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc93685ed968599f28f867f171c0a90eeb3a7c35c51a81fa2a0251244be1077da. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/DEVJ52100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4e127cb728be6807934b34eddf9cd97f45c20cab8695b5cb3aa413e04fca22. 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/DEVJ52100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4562625e4c2cf5cf2d4570bdb15abec45d89a8f4997ffdc8e64012f33ff9b79b. 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/DEVJ52100023.
Timeless Piano Covers & Instrumentals, Vol. 3
Timeless Piano Covers & Instrumentals, Vol. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cbd93440406879ea620cd2376deceb0dddbdf35ae081ffcbd6b6b65ce5904ee. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DEVJ52400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00337fb21114183692e01c3c6cada9923b887fd047aed15277b15b4b38d5cf75. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/DEVJ52400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0abbf18351399241f2203932948a0120912f9fcff2e1b2e9621a6d7b9af168f8. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/DEVJ52400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bfeb6749f69c4801f6ef119d7b5987dac83b7793b8cae11e8dc1b9b5254760b. 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/DEVJ52400019.