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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee2e1d2a6485f8e5d8beaa52d5cd3459545a40b8a01a5ce6747bd7f5d19f589. 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/9fdb6d94-8cb0-4bb5-a985-41fb475e5223.json and https://artists.proofprofile.net/proofs/artist/9fdb6d94-8cb0-4bb5-a985-41fb475e5223.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd346b469a6e27cda81c17cb953b38dbb8feeb20e93b09055abf4b485074e1d50. 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/BRUSA0500981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d1ca85106e11d1f0ec53216d45f9ed3e3f3ac8bd276892b6e148cec54ac2eb. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BRUSA0500986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13232e2d5d24a5a1e0cf4352a1a04d08808f21586dbe4a986960a95eb4bb1ff3. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BRUSA0500988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38582894158fe7f80d89deb4ebb708743d02d6521e54311aaf146e48b690fcbd. 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/QMFME2193744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab70b06531725cc31528af30226614647f0cf48f56a4ec089810e3347ed5f4ac. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QM6MZ1591064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42b0ef208d4eac177e01cba1a1f93deae918a84d22ffaf253c6280e9cb3ea917. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/QM6MZ1591058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f38d01335fa6150747f517f64888e8c5e9144eaeceb09b4b60c3bd4ea96343. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/BRVR10900677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68106978518c3b7855004f2779c9876ce5eb2da75a9326b7ddc27c376e6d6052. 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/BRUSA0300412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f0d2359ccdd7c80d42829eaf5cff718644a859e577bb3c6426a4c526ecc8f0. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:19:31Z), 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/BRUSA0300410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bfe0e370cc2f91d82aed5cd1e1fb0c3f08badcd07cbe7e187c920d72701b821. 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/BRUSA0700941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f2049099cbc805bdb5c5ac9983c8dd04ec2767740eb7a3f8d058b38329f57f0. 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/BRUSA0300406.
Há Quanto Tempo Eu Não Danço uma Vaneira!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88fb0b1ca0a04978b804c3825432d159dd58f8695b0006f15ba4bd8ea78051e8. 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/BRACT1500290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e6574e0020a9c19ebef023c7b156db5e67f9d90e6c181101c37cd177ce80ee. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/BRNFE2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc685599c72d4a56f7ada94f85d15a76e74fc143060e89f5ec672f36c88eb0da1. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/BRNFE2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc500e922b449f9a4c9123e8cc2ae2fa468173813be62d1a5dcd65ae668d2b737. 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/BRNFE2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134f97fdcf21f11c96364fda25dde2c373841d5507ba994d58173159fd48b417. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:34:55Z), 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/BRNFE2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301d7fa6134e2e044aa21db4f1ac49a19d9dd702ae7de53808f32e0d1089760e. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/BRNFE2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79e437ce2bffcbf00c79d80d197ca2d4632d81b986ae3a1ccb3f961c1a587f3. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:02:15Z), 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/BRNFE2000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07f54bd2946bf270be4d3540ae98dbf6808e08c671c9a4ba3a353eaffb22249. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:05:38Z), 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/BRNFE2000014.
Poemas de Mano Missioneiro na Voz de Nilton Ferreira
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e1a72aceb05a7f4c69c71dfc70455b2de6d94f610071a161021537213b9835. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/BRNFE2500008.
2º Canto Galponeiro: Festival de Música Gaúcha
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca49192e9770fca650aa9f193d2d8fcee843dcb66bf6687ce92c8c1121a9aad. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US7VG2048644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6fa9bba92fd78314c85a207ac3ac36fe139e98e8f5e97438a3d5a57e3a600d. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/US7VG2048654.