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 0x54a9e6aa352e47435c939d6be2b2e99e0160314dbd129f813ce0b328d336c054. 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/541b71f6-486a-483a-a59a-152ad129de45.json and https://artists.proofprofile.net/proofs/artist/541b71f6-486a-483a-a59a-152ad129de45.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 0xd082e960fc684ff8c396de18c9e824dc29a208b75bcc2f244765534324554152. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/BXI541700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7229f789964a912fc7eb896c3046868c8353a861aa1303e2f27e0e09be15b3. 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/BXI541700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacdac7e8b5cc4928c57b99ef56c550f787d40ca63ddee20ace739854773c8dbe. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/BXI541700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fdd933772067a55a0db7af44bcacedf917f016c95060132218442a682678ae5. 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/BXI541700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fbb187f38e5167dde67543a93a723d9133fd2c2dd549d4426942bbe379859c5. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/BXI541700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e961d6f2a0147fee528cb333d831a9b62d3a671d511761b80b60c0d2a3dd9d. 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/BXI541700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f50379417320451d70237916f828e6b169bdb8593ad087acc8ebc97cb1349ad. 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/USDY41872502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0772011365acb935dc43ec59580a5bbb1bb024ee585211e57244be1484c7ad0. 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/USDY41872503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d763fb55e0f52adb33b619358ced9f9254cfc29c989db880d2078453ae302d0. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USDY41872504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ae501ac923ae2f9a78c6726a9526b14ed84c1ead518dcb952e043aea9040f2. 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/USDY41872505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e8a760b2ee2e5056a92fbc90ebdbde7f3c05a7cd46a3fd4717f4be2bcf3d3f. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T16:28:12Z), 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/USDY41872507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23be58a68615d019573164762b973d1967fcd2c021cf136e6bf19ed6c7c554c. 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/BXI541700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f3e006500ddda2a300b21d93bc42fb41c7e40930dfdfac0fceac88b191e91d4. 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/USL4Q1873105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c0c5ffdf2d0cf20428055bfca27a93dd543e65acd662ad41f7b682d32819ac. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/USL4Q1873107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54499d0f7aa22d4a081caf3f64758a9971f16330ae2fc18a34d5efd666f357e6. 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/USL4Q1873109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa5d712a719cc8789b93dd686ac5fd8a8ec2876cac87d932a66880e43b5b88e. 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/USL4Q1873111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241dc932f140d7eb77a18cc0cba725924a52301783a10569f77f1e59ab38050e. 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/USL4Q1873112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e17e500ddba360a8ebd112a27316c7bd062463deee6f3b20664aac81ed4b7a. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/USL4Q1873113.
Marie Gabriella no Estúdio Showlivre (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36453f4282b42b1c5f72d9baf4745310202c1f85bbf176c9702215ff11203d9b. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/USCGH2026713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe33c1b75ba3bca24b3c13dba4d51a004e1ace83490cbfa0c690d10bc8492f06f. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/USCGH2026662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a3484eb0b2e61e3f7597af903cbbfc1766c710041f84b21b0e4231ac9311e2. 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/BXI542000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7229f789964a912fc7eb896c3046868c8353a861aa1303e2f27e0e09be15b3. 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/BXI541700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7caf0c172c203bc0b57ad5a57a7b85e9138c5a11031e80e72e0c7fb1eb2a5720. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/BXI541900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fae1ef2db2421229ea31aee21edfbedf5bd9a86d57b17993aa0de4787cea813. 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/BXI542000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d5e4ca43fc61a7e800bc301a80bdca3b93a29567c39faea26130cf1ac9703a. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/BXI542000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaab88fb7b57fdb3fa3bc182fe45af492a4e4e22a98d8e199b0ac4dcd372fc10. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T16:46:31Z), 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/BXI542100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a3299dbc026a0e6f9d9c5aaba0bcdb9fd322eba43bc8613f08b901d6106a96. 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/BXI542200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x768dce293b86a7f26bafde0d73d97bbc48ea149042d259fd3ab7fba7f38a8b9d. 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/BKAD52300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7cbb2cd508b29db8dccef605f5dc8b5ffd4ac5b999b354c127d58153026e6f. 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/BKAD52400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3be6d6db65194c47121728e679e0b7f26a789d07571ea2833dc4b954ba1dcb. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/BKAD52400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d4f7a167d720f786689eb8b45a97b38ef98695860a23e1e2c9926bfb2c5a03. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/QZGLM1944408.