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 0x47782840a7c4c88cd420e231082284dd6efc6562af163131efc653cd2cc85e39. Chain 2 (Bitcoin): anchored in block 953724 (2026-06-15T01:43:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8bd5b770-db01-4aae-92b5-44ec807845cb.json and https://artists.proofprofile.net/proofs/artist/8bd5b770-db01-4aae-92b5-44ec807845cb.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 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 0x688a8cdb6867339671602c4470f2085900657b5a5f460eb8edc4524119af62db. 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/GB2LD2110346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47731f5ac1159fc26b22b361fc38924f198440a66a3a3a619d75641c8f5f0938. 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/GX5MY2181940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8852f38dece1d6b1ff4b88255b3898b7e5edd9020593fd43da88bd20e07438df. 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/GB2LD2110322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d11978d647b0bf92421c38fdaea16b135659dedd415b62c067a278eeae78d37. 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/DEUM72001272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2ee321925487f15ab9eb606dc0aec687f252f4c6de962222e64136d59ec037. 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/NLW3L1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4df558c161be2e8a9e220b6ee421a3e489700050fe44ff650e2ca3bbc017842. 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/GBUM92000038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfdebaab786edc007339faa87e52fe0cd27e588d28e95c444594a9d727285090. 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/GBKQU2411767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6acfef3170064ef667c9cd08522655576f259c5eeafeeb98e587d85b8a278b. 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/GBKQU2461002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8096286c72b9c89ebe6f4589b8730f42759470688c3d016350b6d3cb5516b762. 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/GBKQU2421383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd357ee3d6ad92a268d728f4a27a333285c59fef97c2a8149c3d9893a5c58897d. 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/GBKQU2484779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08e0e28b7c44870192c8499f666216703f8987d6a6760b3d676b8054951f624. 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/GBLV62401414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe497688f1161495bce069a5a86b6c840223383390c804b52585d88fc683493. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/GBKQU2413725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x566db340691a372f13435f53bd9871825758141d1834ba3f1087709d7b6ce76c. 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/GBKQU2435670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827a059c88b7a6a3605b31d47beb9a7abbf925ea907f31d36a226e2c42628b9b. 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/GBKQU2472924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e89b8ca5b0999e62d17356cfdeee10d9e73a7a68cf7d12f36a74261001b581. 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/GBKQU2455755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcba8f70ef3439a9f16bccbd87d712fa8b002c0b526342eb7cfdb90526ed1a3a. 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/GBLV62407996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x595a6cdd679ffad9f585c5706c9401c2571f568e2f4047c33c3709eca86f61e6. 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/GBKQU2497446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54c2ce06683e05679d61f0d0a689a05cb11f319ef7b2bece4384e50a168607c. 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/GBKQU2487307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a9028918d5877888620b4abe548308968d46a72b4e6d95868c6a516431ee76. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/GBKQU2492515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1221d0edc6f1026222f60ebe3200e397fd73083b98a6533aec03ca3cee8d0af. 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/GBLV62411306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b5f38025d452429d645dfcd9b1e2904d535da0c349f876c9ab83fd056eb6b2. 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/NLRD52500063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44de4c2b00f8d67e405cf9b73738f9be627c02a8c2bb390607f67711136c201d. 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/NLRD52500025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf23afc4fc67b1b8fa0bebd0dc42a151acb0697d5a1fd32ee83b706e07f44d5. 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/GBKQU2501943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2e8506e840f631d1ed08a3137db5761bbd5011f8cdad6f1c7bf57d7cd09c6e. 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/TCAIY2452935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6fb475ab6f354dab1494bd067a820232b03b24eeff51f5e17373ec347adf2da. 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/QM24S2307651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88528860aca70dd9a140645d6fe80bf72a1e32d92a6a23e9443462727f4f91f8. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T10:13:33Z), 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/QM24S2304360.
I'd Love To Change The World - Matstubs Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fcae786b1c0ea54b8f88c014d68d5c6c59eca0da9791fa654b1710a25520c81. 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/USUM71519186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09f41b466e3f97d2af844e9340e30408be5fcb411620332fcd9f7d40657ffa0. 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/QM6MZ2539808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf30b4742abfd01d45b060adff2ed8dbddec7178275bdf14365fb88575a0d1e6. 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/QM6MZ2539805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf153418a3a7e6ab785da0d92ba3008aeebd461a65cf1dd3c9f61b20b8c4c99d6. 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/NL3M12501685.