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 0xb3843c0257600dc3e2e1fc8a224dcbf89d716377f2f6aea68879d1e5d134cdc1. 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/6785526b-f315-4950-9545-aa1e817ab615.json and https://artists.proofprofile.net/proofs/artist/6785526b-f315-4950-9545-aa1e817ab615.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 0x6afd9d980bfb98a38ff53eb803f9252168f1b7995cc3be5a16d133ad10694722. 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/FRDCX2072600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b3510b63f01f75fe50bd7477ae7f1a78f753a1ef6dcddb370653f8b1b503807. 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/FRDCX2072610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64758e8d697565dc0934e5645d4e221eb100ecb45a96837d0b1f253c3946b3d1. 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/FRDCX2072590.
Purple Widow (Original & Remix Versions)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0fcd0d36338090e72136710ee2ab42aff90cee903c6b99a67186b04bf319009. 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/FRDCX2119960.
Purple Widow - Paolo Ferrara & Lorenzo Raganzini Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3734b6255e14a196e2f44631f70ae83465dc3c21db8fea937fc4b88671427ec0. 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/FRDCX2119970.
Purple Widow (Original & Remix Versions) IRR07
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdaa032c27878e9726f0cd52df60ceb81aac00765bd973bdeda8ea95ca4f1211. 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/FXR752401466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704a61cd4743067c1167a6a27bdfecdb787ecbcc9c0fd5a2cc83d4f84e6011b9. 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/DECY52102228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ab171a20caaa0a05f5d04b202f7c8b96a95cd0fc33a8b0773d1fae88526873. 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/DEH742179568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fda2ac05a63ab678feb8fed81d980a8f1efbab2434e5336d3a3a877ca7f4d59. 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/BEN582200239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7350cc7246bf1edfe7e0ea5f6c2547189067831f3ff0fd67f9e393ce0ebc32f4. 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/CA5KR2113387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e536d220ddcd4325173f778faee1a8c6aa85b9acf3d8853115b0db49dc2fa13. 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/QZ5FN1808233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd819ec553722fc19c8da7b5202bbf76dcfde91c65a356867c1974db958c7d7. 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/ITH642001170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3430d0dda5c2eb0cce40d0704f87fe7f5b77f4a389ddf291c96e59b1e28d68a4. 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/NLCK41087389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b5283f61e73db277a0a5c2a19001bf39d5a58ba7fd0ed1f0e10117d50078063. 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/BEN582200111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37d73e1b39b8e901d40fa00791b65fb32d79ada6280abc53434aec48d3f8d9b. 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/DGA092432220.
Mixmag Presents Charlotte de Witte (DJ Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa03d450f0771bc10ee435dab8902ac59ac381f57877c5e64789458c5df45147. 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/QMFME2133221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8117e81e6f0c06c140be64007c413c1324b18a24610daa9eec66f25dca90624. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DECH61900139.