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 0xf32f8fe7c81e5c83dd90152cad0baaa57238249a9a66a9dc7a09d3031b70096f. 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/75eecafc-a9ed-4429-bd55-22d55fe18863.json and https://artists.proofprofile.net/proofs/artist/75eecafc-a9ed-4429-bd55-22d55fe18863.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 0x4c400713d820c99a59008e1ed0755addf62aa35bce7e0242f22ed9e70a2a7d4f. 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/BRBMG7700066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b33e4f584a4a743b9e350308b359a045e16795e92116b4d00f84cac802114c4. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/BRBMG2003343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb875cb9f8d4f522a315e2a00df8eeaf763683ee4337012d1e6897f3df9157b4. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/BRBMG7200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c5a1dbfe9f72e147e4f8493f0a428f754d7ed782b3b7ac834d7a8b7f382c428. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/BRBMG7400068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7686f4b2f1054c418e000c37468772e98327f16882c247eb0ce294c5bd16777b. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/BRBMG7400073.
Rosas Perfumadas Para Uma Mulher Apaixonada
Waldik Soriano Interpreta Orquestra Sonora Mantecera
Waldik Soriano Interpreta Roberto Carlos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6967fbad453e1ca1e2532a3435e07c93a4b14b9d8b4ebffe27aed437249f6272. 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/QM6MZ1417098.
Como Vai Você / Os Seus Botões / Outra Vez
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d82990d6c849075cd79ac7f40a99f4e032c3b2c9d6ea332efccf5bdadbc806f. 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/QM6MZ1417102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700142f0dc7534f54dd0095fb294a0e498c947ecb0b24b059fd3d62e5525dcc0. Chain 2 (Bitcoin): anchored in block 957616 (2026-07-11T21:52:36Z), 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/QM6MZ1417104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95060822ac78a7d76c06ff1e4f975a22f0533f911b091bb18b925d8dd3634f1. 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/QM6MZ1417105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24fb2acf387f02b83f0079f585402187ab8cf35ac9329ef78a60933e2979181. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:06:12Z), 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/QM6MZ1417106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239235d45be51557b06a26a53264ce6107eb9641b1bc058a2d6d0af0176f3dd7. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QM6MZ1417107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937033425d100c4227cc6a50f51a5a037b45a4e40bcf1c78d2b7027a1ecc8b88. 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/NLRD52420404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b33e4f584a4a743b9e350308b359a045e16795e92116b4d00f84cac802114c4. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/BRBMG2003343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a859c6546596d0a7830bd3210d01c5612ec0fa2ff5bf4212cb24971f7d66dc. 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/BRBMG9100550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda22cd527fd853c33df5baf0602ba2768b0f5799377a72ecd21b6e76ab395ea8. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BRBMG2003647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb47972b1f770697390a773c684968a699f159d5065db480847503d5e2b0537c4. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:23:27Z), 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/BRBMG8100255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fcc67243e04967c4d56b0e51300d0666ddec424fba5fb28aaa60c70f77384c2. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:01:02Z), 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/BXN9M2008293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27447e1bc706b20207999698dcea1543a18c0dffff4117e593a492c9bc4183b2. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/BXN9M2008294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c0c5752ea7801cf0ee4fa37b08fa50a510320f06ef8317869d2d0d3456024a. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/BXN9M2008295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a05750c7a8672c7beb14b9148a419bf1babfb49bbbdf796493b42820f4ac202. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:53:20Z), 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/BXN9M2008298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f16c7a946b6cbcdba27e6823683d22b1094c35ba8580c275b1f5e74ee1c0836. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T03:18:11Z), 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/BXN9M2008299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb445514628e6e7b31fe8f75c1fa643708270332238116dc82a1ef065427d3d8b. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/BXN9M2008300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7053bacaf49640c3e43454839f857052984b397978070781e81174c8590a46d3. 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/QM6P41489538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa9e6b8e884868bb603339eba0c3b9ac56cdcf09e9f7053191921a3666631d1. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/BRWMB9701382.
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 0x7ce6ea2cd9d1b290e89502aa53488e1e9737da1692e9f31af88d614ab3b54181. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/QM6P41489533.