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 0x47a89c4247d83177ea192190aa160c40b9ecb200f0c59f98c104a0a956f60911. 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/59bb9cfe-365e-4a76-9816-36ea2f3eeb54.json and https://artists.proofprofile.net/proofs/artist/59bb9cfe-365e-4a76-9816-36ea2f3eeb54.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Beautiful Boy (Original Motion Picture Soundtrack)
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 0xd1b9130163a3e4134558b0b1adfa1df9a8a84ec6b2d1f69e9ae938ced73fb0c6. 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/UK7MC1800056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927227f2bd49e88968ebc012b192d989928d0184d85f16f4f95fc6b2d7ff2629. 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/GBGDZ9700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5722216358b2fc9b72ab89750b41693ecb4b4892f75fd6bab78c51ee076829cf. 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/GBAAA9400365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e42528d74a09e2c5cbd09c8697a535ddb65c151c7764a5375287e4c4776856. 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/USGF19942507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9e7e84df89449ea6331a8c4e5c17157fb46ea158554853910016afe875712f. 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/USJT11600370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06d34d75b7313e953c35906283dafed601b0d6fe23330aa135ee3f3010deb9b. 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/USRH10650432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3560d95bc783095cf293e184ada3159ac9e4699381ac182ad5e80e2137e1fc5. 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/GBDCA9900067.
Beautiful Boy (Darling Boy) - 2010 Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c795a5100d052cb22ae4eacef2f604027bffb9742adaa20b9c66264c2fcfb5. 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/USTO11000021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17311c592d9cbb22425b1f67b60adcd816a9c860ac13806e9f0fac1ed695284a. 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/QM24S1835747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb56e4ce99c5f6419ec94165632961b433b98ff7c3d02b0a3ac6fbf42e720b3b. 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/GBBPW0100163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad16c041d26c6fa777875173db14a707300897941d336c37a5d048c73130f77. 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/DEKP90900109.
Symphony No. 3, Op. 36: II. Lento e Largo - Tranquillissimo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a4466450785ef3c0b162763ea437dc277d94fef794c9979fbde369d37d51c72. 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/USN019228202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e208e775569cb9bae79cb3b47910a6478daa47316b8bf43be271bc757d188c. 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/GBAYK7100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e45347a722c4d9a840e2d59f06b4f684da961fd99ad7c2d724a677acd0c138. 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/USAM18300364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5d7660073ece2825aacdb39e1dafe53538e5e551dea12101490125093c6b2a. 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/USNO10750554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a46e52e39ed3fad8a44bf2161eac341198cfd24a8e6a7efa39a1b0c6289f33d. 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/GBCQV1900426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x528c1d9ddbe6f9a42ab22fc20f62be5df56414c115118e2568974b2ca9c181fb. 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/GBAYE0100878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef2dcd18d79482c6496a3913bf6b27cad997092d5d2238aa3fa1e3a9b6fbae88. 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/DEF068713340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2083088dfe75b57a8a042d2236a8455c9c7c1e677993f660175d918bd174f3b. 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/GBAYE1601694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49f27f438de9c515f738551cd1e230b43782e522d1445307993a7549a1b86d4. 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/USRC17504234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864a123dcfae09adf1de123db8a79478fc3cf8c719690fc7f79b94ce48929e14. 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/USRH12302544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb4e207b8df0bf8721927d7e7a6bf231ed52763307987b460fee41e852b408c. 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/GBARL0800949.
Has Anyone Here Seen Siegfried? (Remastered 2024)
Has Anyone Here Seen Sigfried (Original Mastertapes + Bonus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41719aeba05c559828900eb934414b8538d55d0f1083db55197be12a570225c. 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/USSM10306239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9592bbf92b3b3c2b086539e2c7fc1477b4a4119f60a735bd3d0e01ab2631c75. 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/USSM10306240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c4aef5dd52a63ed902d99c98c1025b5edeb305b5da80e841314f6390fc62b0. 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/USSM10306241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x972aa8d0093ebac1bdbc48d7d9bdef8bba76d701391f296217bb1918fcb01bee. 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/USSM10306242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de857f0a5d1903d0668516d11971962b173b9aa3e95dda9c5ca2c75520f9e85. 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/USSM10306233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2648f606203cb7d1241482281b4fbae23cc7f1a4e2327c8470cc321f56a57169. 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/USSM10105645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e15231672c29f38704377d804d78f69bdc9547a67fa477ade5fd2944864aa11. 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/USSM10306234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb15bae0aebb02e230035533141fddf732c5c8b5596571a74ed21a5c9aa49308. 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/USSM10306235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b60e1221feb9149ae93348e98169ef59341c8c1ecc05b9a8b7e8b51545206f5. 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/USSM10306236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17c856d318f27bf4cd76a466b000c4f393937c5c25aa68a82cbd2605db88f07. 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/USSM10306237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d6b911803630e4d865680e7a999f273d1de4c99f60ea56880622e92bc71e2d8. 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/USSM10209897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b912780494c5feeb092caeac2f096155e2801b9216b7e0ad3be016df634881. 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/DEE868300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a9de376fa883181e4b3ccfd3a1776824954e9e67aabbe3e43d80682d25a061. 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/GBBBN8602027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ce5c5f4d2e33a421365f1063da090233f708488849cadfa80b04545692b4ba. 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/USSM19928270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fbe23cdda7cbd699db71545bd153b153fe1672c53d602ba11895d9a3e025728. 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/USRC17904299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1efbabc074cb06b6a23b8d3e6b17962356c4a5bc05f4cf4736b9b8ca38e2cf1f. 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/DEKP91800407.