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 0x52b901b0c54a9679b98dd0cada8bb2f819d93e3978a11192dd797bfe3413d689. 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/8dd0b5a3-e397-498c-88b3-7ed1d5da3772.json and https://artists.proofprofile.net/proofs/artist/8dd0b5a3-e397-498c-88b3-7ed1d5da3772.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 0x1a0c8a6b577f18e4becb6bcc18d5890cb1f2f12ac51246827c45c9ae8df62c2f. 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/BKLL22200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079602260acd742576eba783fc26a6ccecb66e1248afd5f88d582868b3157a2b. 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/BKLL22200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa43eaf8baf28f35a67a682d63a636c8347b8ad5f5079c23ba013a585781c697. 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/BKLL22200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5ef6672d307cc0eededb4d1e88359cdef72bbe53c4314cb51dfcebc2577a29. 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/BKLL22200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a1a31596b860961d3ca3ee04c4f908e9a12d9d807eaa419a2804441c67b947. 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/BKLL22200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823cd6d4a966fd837c4dfd1d016a97fbb9ee2b7afb338aed0ee446ca75200c50. 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/BKLL22200007.
Músicas Melancólicas para Multidões Miseráveis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96877b2b345510e3123517f6c3e974929d01b54eb06c8444bb08bbf97737696a. 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/GBSMU8231428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d94f513b40e68793a450a85568a63618f273c9f9932b4aa4a331de7986191c. 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/GBSMU8231431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac14242392af61038d9880a5638e6289b13ecfe654420710e83800584965f888. 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/GBSMU8231429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03987ddcb475396aebb4be31f9a7861ecc4a0b88cfad4ab57f179973572512d4. 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/GBSMU8231430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa922c15bc549266ca82c27957fce260ac59408a76018845d4f8257d9bc4493b7. 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/GBSMU7675869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc845b6cba32c225688f9c712b6ce19d524d1decb91eb9e4758c6ebf8e1cd06. 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/GBSMU7675870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf30a7c1c42da5a235dca3510ae40c252685ec37af940b02f559755b09cb4ce4. 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/GBSMU7675871.
Paralisia do sono! Tem um bicho no meu quarto!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aae2e6dc1635f09cf204f0cfbee6dd991328d0227f0e7148affdf7c4b5f9377. 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/GBSMU7675872.
Eu não falo de meninas pois todas meninas me lembram você
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55e4cab8aed1364ef76134aa09d1a7a497faf3542d75228ee324cefb0dbecc4. 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/GBSMU7675873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd4c1f323cf19b7a4759fc8f3a4ec79e4f4ff7d4367030a7fa5988f98463711. 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/GBSMU7675874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27ee2a0b053903c8bfe5884914375d2409fac03144c150f167ee905f4ffa505. 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/GBSMU7427330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c04d5f90e2c667fa7329cc4f7145f4cf9be9f8447a4d66c05371790703cc25. 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/GBSMU9496073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ece8a3fb0abb90bd3609c117e878c46edde0a6a93e9c7cc6aca4d0e67be8c6. 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/GBSMU9496074.
Toda madrugada os demônios estão em volta de mim
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a286ab04cebefeb4ec8c8ba77cdfadec85db986fa728d4be92acf9bbdc80e9. 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/GBSMU9500821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547502c1e7bf21321e2d39d4c0314313b84af0b148ae828887a1e2106166c778. 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/BRP0J2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x789c9a74802b270497e996904f93343dddc45169f9173e34c1802c2f2f01c2db. 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/BRP0J2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28655a551298418f84f05d2bd25eac9ca9979164021d7e3bd0a7c4785bc79e04. 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/BRP0J2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547502c1e7bf21321e2d39d4c0314313b84af0b148ae828887a1e2106166c778. 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/BRP0J2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2fed2fada7c99d38ddd5b55a1e172bdb5124ebc433490320c3b7fd691286e4f. 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/QZFYY2459174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26c3defe6213d943a4d77d444529e76cd5141abd9b6b7b98ec34c1be57aa434. 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/QZFYY2459177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08cef52776244322ab39408696c2e86566c3aa4812b4d57cba181233dab7db7. 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/QZFYY2459178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x401d3f121ee71c832dd5c3723fa3263807597fc56bf47f99737eedd18dde0c85. 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/QZNJW2154019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d1784106402ee36340796178f6959f4ffb3dd3eb3d6a460bdb320339f8cef5. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:21:11Z), 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/QZNJW2154020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa3ee19b567614f797bcdb411c79ef2b535dbc6cc628463b3707785d630d4c0. 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/QZNJW2154021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88d60199c68b3c566fcc93dcada64b358933761bf9cc72b841fbfab1545dbf3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNJW2154022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24b05e69158c5f04603187ba8021a85aacee0c9fb867a97dafc684c21adab57. 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/QZGLS2071836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x780c08481c554e739183d1ddb6e0e49b32a914315c6700e362ef4597efa914bd. 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/QZHZ31919235.