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 0x85ca7d53dde3ccb58f4cf56b71f3145e9d3b670ea8f239068ad0b8083fdf946b. 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/b5182447-f6e6-4522-8be1-53b9e9acf653.json and https://artists.proofprofile.net/proofs/artist/b5182447-f6e6-4522-8be1-53b9e9acf653.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 0x10832da5a9d341d1156542166a2f0846eeea8db913bb9fa40f93ec4026eb104c. 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/ES8241920703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93bad6aa283a635b6330f7eaf99c2ab7bbcf1e9dff9959925ccac07fb43d1eda. 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/ES8241920704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5bacc4ed32bacba2c9c839afe4f6ca1a89bf391155c6c89636a4b15ced4af0. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:53:07Z), 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/QMDA72191370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe5815faed4facb6ce148859ca65967b39e43bfa4328cd753261f245b995e957. 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/QM4TW2255418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdcfd1300c7c4e32201d28b688894123513d63cc1956c35e78efcf031c80c83d. 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/QM4TW2255421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b94c4ffbf2f4a825b192622293b82cd6530bb9f9f5fe419928dadfd82fdf23. 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/QM4TW2255422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3548c62b9350f85d5699c4ce1bff99ceeda975d587f82a37ef9a688ce2e22620. 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/QM4TW2255423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812fa8586dad6d31664c60c122be896ccd2af20b8236f50ccb07462b51c978d3. 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/QM4TW2255424.
Escarnio e Maldizer - En Directo XX Aniversario
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb7e2ca0d1dc4fa549ed45da97730001862d0415c30b5786eaeb34fc164687a. 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/QM4TW2466835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7c1bb16b43dd2dfb318cb27d0a6317042cf736d5a737719c8deab303f6c170. 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/QM4TW2466836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37fab4e6e5abd227b4f72e3a2be4879921161c80f4e1624a67ed5c69a34ba6a3. 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/QM4TW2466850.
El Futuro Nunca Existió (Live) [feat. Julio & La Raíz]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b70bb7703895dc8c5404340525569a721b8b579412be11e6d372aa59171dad. 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/ES8241624008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15df33e14186a8a752bb1d6bb47c56c623b09f794e5a7ccf1ab4b657afba7d70. 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/QM4TX1523519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf77e38ca6799a52e4c5d50ee6d94b8973e5ab2ab64549457ed3a55f87de32e8f. 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/QM4TX1523520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba8b37bbbb08f0273183321b1cfdb2d4e88f5568c4953919372570424bee749f. 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/QM4TX1523521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a59c8cff8e96a8ec2f66d249061422c51f1639c099b55b3c7258779961934af. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:01:48Z), 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/QM4TX1523525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12637f4e8a7f467634a07400661e1bace105354f1e3129745365bda1341e41e5. 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/QM4TX1523527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf51973edd5521d4d59d6b391a359f50d93e524597abd9b705069d609700f60. 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/ES8241143701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79996e59e5317e954c63de494a1dadf0110431649b00519ca1b0f145bdc21e48. 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/USCGJ1031358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab436035e993a4b8bde35c4918d0c0c822fb2c88b0b07f2fb821a36d00a829a4. 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/USCGJ1031359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af4c91960d378003f02649892507e390dd875985bc812a28c20340d5e6373cd. 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/USCGJ1031361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c32944040cb5f6d7e0afd817a615c50d05ea442e06b31f42899b59e4497397. 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/USHM81079822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b773cbd6b9b7eb34f4b97c65c9d96b085eeb9856e27f8d2ba5033cd93e62741. 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/USHM91017972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7195aac49b48ac8cbb8974da981bc523d0058251ece26bc98495163c07f33855. 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/ES8242028501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0bfa373923aa714faa1cb331dba9ae47266daf40cf25dc32e10443bab5d3ea. 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/ES8241825203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8426054810295afe7704966248538760f50ae4c0556992e02e029b98f5270cd. 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/ES8241825204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc783841f685eb82fddbb99bc97faf031f4dfcc1a8f8ee3f2611a06b02f19eb. 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/ES8241720101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59352a012c955e8834fd8293c40465aae8b41e81548ebba4a7117a7ee55028c9. 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/ES8241728901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6983dfd483c1b8f43b11f9622a4d374bc05d25966a11eed01887d0390176658. 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/QM4TX1772640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761cc23e5a0e99d93d569c4b04a9977bb9b5049a9e8079b48c7dfc17b7d186fd. 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/QM4TX1772641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ec461ad9909407873d8450c240bdbc7af35f730ce666bec9295a0ec1dc1675. 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/QM4TX1772642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f142c7e85c846d4d5a300c254e4b4abc97b473b9b3b305e980ad85d5200a635. 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/QM4TX1772643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c1aa21f817f4d2223170840beb03936fcbaedd249467c15f8395aceaf6ef1f. 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/QM4TX1772644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd96d2fc69f29236fd9d7e2f60585b63092eb0793f2e3ce73a4de89c742b27d1. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T18:10:20Z), 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/QM4TX1772645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x221025d528c15718074b0ede54f668faa9e035298065b00abf52e2aeaf930336. 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/ES8242543402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a861afcd1dae0c333b8adc74df8e66fbd9adedf08c8abbbd5cfb8d096b8559. 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/ES8242543401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6da40e35ea18e9caf13c9e9bed2ce7af8c8b07d7c204e688e717c28c8eebc48. 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/USA2P2466903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6da40e35ea18e9caf13c9e9bed2ce7af8c8b07d7c204e688e717c28c8eebc48. 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/USA2P2466903.