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 0x69a1c0519ff4a43844de1961d8bf53297dd9d0c56900faaa712abe56839a5403. 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/183ce1cd-2328-4b90-9de0-267ea305bf1d.json and https://artists.proofprofile.net/proofs/artist/183ce1cd-2328-4b90-9de0-267ea305bf1d.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 0x5f4b1e2b86c14edba116a060ed2c136648071bba6a305b8aaf6db8e95685245c. 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/BRY4R2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30a47838a3bcbfd7de251e9599e6a3a7cbb32e0e987347ee47c8c1f8832b560. 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/BRY4R2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84550c6b2ea2d6ffbc3a813a733cd40b0c5a0fa46536fd8830da6e0a5f87a07. 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/BRY4R2300012.
Cachorrinho Branco e Preto (feat. Coruja Bc1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792282b822b93574ef51600ffaaf60ea4bf818e6529c4ab8ffc6d8a73fb69d9c. 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/BRY4R2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2018fe9b6721a3e589d02ff1fb36e0a5f07f989967a7ec4e8a217e9008dce542. 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/BRY4R2300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb951f59b7aa1e7d326559df7ce9185502aea04dd6ed41d75604fbf10776675dc. 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/BRY4R2300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6747d5791ab5cbeeedf5c15e8641d0e9f4c95fabaf1e5f14c197345e1f7d4f6f. 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/BRY4R2300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa304109f9cfa198e4a78e6aaac0e62a6429e87ea635c96c02c3116742012f3c5. 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/BRY4R2300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5818458d76d283232ab0055c004d9a0b823bf0208c470828566149043bc96da8. 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/BRY4R2300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x041381020667b386aad8769907b76fa4d66ebc9bc226b86d4fe0ba82b54896a6. 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/BRY4R2300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x369364a1a4414506fdb6146dc1c1fd67dc1e00b8c3f3208e0d682fedee442653. 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/BRY4R2300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc620855dc900c238071209868cd87229a6ab2db413e11cda133fbbb68fc72fcf. 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/BRY4R2300022.
Responde Pra Mim (feat. Rodrigo Ogi & P.L.K)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d78485e98c8eae0e58767aaaaca6471d840b8552af7fee93224d10340f2a02c. 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/BRY4R2300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85345b288c048a2ce4b13d0f36b8f7a7dcbeecd0475398096eb68535dec5cb7b. 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/BRY4R2300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50251c6eab99f69643e60b668329fd0063296a5300efa6d341f40d4ec957e6c. 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/US7VG2495930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f990bd0e61ba602e7f4f95f68e82d5bde05e7ea65daaced2a12aa48152a829f. 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/US7VG2495931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773be3541828e2d2d2e817a8a01cba8d9368c648517b8e30bfc7debc4c468511. 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/US7VG2495932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d51b57bb8858e760bf706179e06d8a1371d632665f0e98c9961b7bc1149cbed. 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/US7VG2495933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd9891856f0e0a70bade98d7aebb87d1898e24535018d8c2e2eb63f6d464333. 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/US7VG2495934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43653062c8853234d437f9512c2eeb5d798bbab8a5c3a0963cfd83c52e84fe62. 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/QZNJY2229426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8bcbd22f021bcd39a8cff240141da0f41f8b7913fda114740b0ac910930115. 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/QZNJY2229427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1864cde5cf2234dbc0ecb91c74298218a469a5d334e60e1a0f8627c575e2e691. 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/QZNJY2229428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a130f888a62ebea1d7aed19f3ed2b020323d977f3db9992e94aa4fba511679d. 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/QZNJY2229429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7cb74d1019f66bea9013a5f25513af3c2528960fb5e31fca7f67eade320b696. 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/QZNJY2229430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8203e9471ade62357a9295f6e04696d44cf3c2faa7b4905de93dd6a1ca2f0a1d. 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/QZNJY2229431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c3868ddd177ef3baf65032021e0f3f30888843de8352aec79b2096587a1e8f. 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/QZNJY2229432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab6335c80b0be4ea811f202f015fe8cc8711f9d51b4a77ba8edb72bf61d5ee3. 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/QZNJY2229433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a43cb027e8d63835dcec270022b1ce41a127a7c2c5f52e7fb5b4c009bfcefc. 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/QZNJY2229434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67723652d5514a48bb5ba37c9b03578869c7bb13289573fec61a5011f7681d2a. 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/QZW9L2329469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca63adf35698b2851d6ce7eefb1daf1c7cb12e97fa5177a11b1b9ade08069e3. 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/BC8PH2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5523d4b4d1d006fad18031ea522928b958688acfb19679c2c0d042ef6a918244. 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/BC8PH2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79f4ba9ef8bfee30ab76e091e495aa9b58f05c16740b403232823474177610f. 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/BC8PH2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c524fffffcaa2021319008393ae9be24e5556e21d23d699f524bac3798efa3. 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/BRY4R2000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8071267396fc6f7a7cf964a81426920daba3e39dfd40f1e91c83e9e82c6134c3. 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/BRY4R2000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa365111f38bf28fbd8d97114452a480bff027d47d7a7577d6556ac00547fe64. 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/BRY4R2000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218f1fe3bd03602e54d41176b0bed76c9faa1c0420b1fc3410a7d91f686de346. 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/BRY4R2000021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedbe54bbf099f988e87c86007b222c011ebd1a21f89ae1c07f5c7ea7d84b204e. 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/BRY4R2000023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356e9736fce67ca612489614c842ea8c314a094e47a5cbbd2302ff68f4ec4140. 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/BRY4R2000024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e4241fa6e4d30364b898b6b79fbc4ca3ae1dcb359e253ab43c71e6e6c483f4. 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/BRY4R2000025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2340d749316884951fbe89205aa7dfc40bed7a3c352ccf88addaf7c4551e43cf. 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/BRY4R2000026.