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 0x07dae4000e7051e8f98ccb881e1e84fd1cb281024462f8f31595b265495978c0. 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/a602ee3f-f2c4-455b-b50c-87b6a6638861.json and https://artists.proofprofile.net/proofs/artist/a602ee3f-f2c4-455b-b50c-87b6a6638861.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 0xbc4372490fc6619c9797ea8c49393982c7d25671336215da69e0ed7e92898d6e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BR7ZZ0300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34e22481b3b0badce7ce646dbf22709a431e86a4c894b0ee33510773d18b439. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/BR7ZZ0300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ac1ef625073cb8d832ee9add5a03877f305e14142044ea2de600cf4b245599. 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/BR7ZZ0300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7914a4d3152602482cda0347fc9ffbcbd3996ae7c5248c2285dddb4d4467e3e. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/BR7ZZ0300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e6cfba186a50278d2d2abf8b5599d54f40a6079c42e3d5075f8e0461e5cb12. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BR7ZZ0300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0efb3e671791c41e1d96e6b408f21dc18993493ad221ab877e26d9157a1ceba8. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/BR7ZZ0300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e20097671ae83ae6bbb269d4e1c5b1ba9a162d7718b2b93ae3b76bbc29c235. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/BR7ZZ0300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa206213dba338fe241045babdf443cfe556d28dd52339e3d9ef9286af90d66da. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BR7ZZ0300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a065cf7ed87d26eb217bf15a51bb5e3c34045b797d598801932be292ce73f80. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BR7ZZ0300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c92ced845da994d671232b75598bbedcd2096c9668d737f3ecf287e94589521. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/BR7ZZ0300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ca2fd59bde43d57dde84e3d98ed2aa154546f9aca9d77b60fee03a29e671d2. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/BR7ZZ0500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40be7de2f29a2bef02f37dca24190f89071d016e2c03212b9cc6be2a25296ad1. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/BR7ZZ0500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b4e27710b53bb10b0f02ee1b18975c8aba23fad5abef0ebbf6d60e8e4072bf. 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/BR7ZZ0500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c6e6807c54b3c1b97bf463de21db35bae05f57f3692e8cf53551293f72c3d28. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/BR7ZZ0500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012831a9cb36563bff8f1c421fa7a6ba4a0c042000f96e94f7e12381865e3b2a. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/BR7ZZ0500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe988cf7c659e53cb9266779d2f1bfaa8d683b4ed59562e361d8a47ad67d93aa1. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BR7ZZ1000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca51a5126a98ae71e475f7b5deebe9740fd8f11a7db78e8c5de059f4441d5fd. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/BR7ZZ1000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd76fb412847bc6330f2537390ba1356f1e9c4fb8f69c6a4b2d0d80764a3d27. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/BR7ZZ1000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a2c703f024e9162429a664f2a0c02b481009d753fdbe1997af9ee267f3f5cc. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BR7ZZ1000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27fe35dd5ee92654946ecebe7f79d0712fe07695029a2daef053dbe06aa84659. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BR7ZZ0600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd13c71138f09cad553c3aa752985e12c9e4299bb10f6f08353d07053d2c2ff. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/BR7ZZ0600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8926dc431779bd8807333deb0003c09afdf0b6024b3289128f066022d50a54. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BR7ZZ1300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x329a17d6773c79bc897d469d67a6c04962a8ccad581583e7091a053c2e49141a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BR7ZZ1300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe210de5fdf4e27939dcf6e75b16de5d29badf7a4ad3ea011085a4a3bf3a27d76. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BR7ZZ1300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf267fbac412c79cc582956b149e6550b00a8fc257cab8ae713a5a5f9a60065. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/BR7ZZ1300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb911484a329e718b9acdb206791ef039c9f7c17b39463a51358712ea335c3dd9. 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/BR7ZZ1300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129195135e7faf5ce272ef035c282b2d3c1f7d5db384275e409f660ccd8d3437. 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/BR7ZZ1300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8817d3579741a1398166ba7e008ea20e315ec558f3655fce1f97256b1b09ba1d. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/BR7ZZ1300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0c113cbbea19e5bdd0fde39e3842c86b6c05c0ecffd550ce25252c41f7d7b1. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/BR7ZZ1300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440f80f01de49234c5b007df33711aa9ed89f6ea86b9a27c245323b51cf3f0e4. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/QZNJY2164969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78218ba52ee8b03954d3948d96bbcd7d2c28f6e9b69b70a2b9a4ec8d040177b7. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/QMDA71590190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb532088b469740995846546ac45372561082c1f02b6f969f4614db4685fd94. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZNJY2164978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d4d87c7fa501ddbc757ee0e9c9526f09f24d111e3dc79d6b562167bde1cabe. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/BR7ZZ1800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1bff9a2b9fee9c9579af8c676c78e6cef760d423bbf1247016b780c431bb988. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/BR7ZZ1800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc1223160bd1bd27583e91f094a2a0fb052deb1c7c9de20efd19de24b5a44259. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/BR7ZZ1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1bbfbbb9d87c5a40ea77c2ca1a1aef402ab91288736fce32b5fffa85cb29afc. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/BR7ZZ1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568d30da4cddae5c4f9a5b8d23763d3d28088bca838db051d86ef0dcf634fb6d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/BR7ZZ1700003.
Reggae Brazuca Colab #3: Amor pra Todo Mundo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x273dcfbf4f94bb28df55ebdde4c589bf442b049742081ffbcfebc6e068c16760. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BCPRM2200002.