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 0x30060de625eff8c550c368c821a902fb4bf0e4f106c14aca47b83df65920392b. 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/416a3786-7a0f-47d0-a565-11a59bb2aa87.json and https://artists.proofprofile.net/proofs/artist/416a3786-7a0f-47d0-a565-11a59bb2aa87.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 0xcd04b5a101c5dbdec7f8338ff8d3b70bd41675bf8290b4f26ada32eec9af320c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/RUA1D1809161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a48d46e582c031533c3595216f635e7c48e037b0d0c55803242991011ffb22d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/RUA1D1809162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a76a5f7948acf31a1719450a7d3abe51f94a5e72d5c3da88651151f1f809315. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBKQU2284881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cbd639854f1241d261c3a829e92e712d370ef5072783b1da920bca4edbaeec8. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GBKQU2284885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05be410745050b68325db85f59303db1fb455f2b3837001f329105c9f6fe0eec. Chain 2 (Bitcoin): anchored in block 957629 (2026-07-11T23:44:46Z), 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/GBKQU2284889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871d3e21fd6bd91b4f71dd4d01b79c3ac03dd2ed2969b02e2894e11b54a153f6. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/USYBL1900324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264710170123cbeed3c868b88919bfcd2c1d2da0d84b88cca19bbb28b6c26f45. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:07:57Z), 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/USYBL1900328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892f6542dca064d4e3fa707fa4c736b4440187c0c44a9b3629011fe0d2d5c4fa. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/GBKQU2265632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e136730fe6461397137614ebde024a1fa132150808a189830776c97bfb85fcf. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/UKMH51900030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82cd24904c86eeb26923e04f481ae8be51a41a8c427b21d64e3c8816e0a600d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/UKMH51900035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x258e1d749ff7c2dd5841be99aa5aa549208ad733a5e8ec651969d56f7316610e. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/GBKQU2367563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0726b82ff1f6fefef59d9a225e747d8799f9e85d6bff818e58c54ef8e2603ff8. Chain 2 (Bitcoin): anchored in block 957624 (2026-07-11T23:13:54Z), 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/GBKQU2367565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f97bf989b786cb075749723816d5c0f8e4acbb6320f169819943906370595c. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/GBKQU2367568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4220abffb29787d2904aa9107d043f6fd5862623f2ef1bf107253642d22e33. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBKQU2367569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e80865ec55f3919d8f24ab2569fd96fab2878965f79fa03e975f82351e79e6d. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/GBKQU2367570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc0a9c74cba3c507a6c647c7075f107d7f8ad71f98bfda58feaae5af876c237. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QM42K2428319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb91f027d0f1c0dbb4d395ce02b3a299b397a4a95b571a2c5cad2c48aaec4919. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZS632421794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09cb1edb6c4384bae537d57b1ada3a6ed8aef5172dc4a457b29e57a42aac784a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QM42K2428869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ad677d1035b1b6d818ad8eef38b9d961adcf55fa1fea9034fe05b8be732290. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QM42K2405540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8748dedd4d8fef7e5d3db7515abcecbe7e8e1fb3f011575038bf0e6fd2a13342. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USYBL2401202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d6f6ea9f32824f78fa8b4e7a948f27ae0982019ec532a5bf553c964d2bb877. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USYBL2401204.
Nina Kraviz Presents MASSEDUCTION Rewired
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa76ad68d4429fe00633698f77b389fa5f511a1d896a8ecd14444613737603483. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/USC4R1902984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14ed2afc89950542bb6750e8f4574132c044427c6f5258b4eeae4ca58131766. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/CACWV2253355.
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 0xe7ca4b2f828e9caa22f96d5292bc00ede18ee61a1eba1782552f9156bbcbf13c. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/RUA1D1809154.