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 0xfa23bff662742d8df976837a4d9314b06c68a3358f44bef5009804f857bfb9be. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ac893400-3e61-446c-b17e-e3bb432fcf13.json and https://artists.proofprofile.net/proofs/artist/ac893400-3e61-446c-b17e-e3bb432fcf13.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 0xe2223d9f78c55cef3b43e97d60e37edc98ec41dcfcf3d75a6601ac610e3e1fb4. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/BREMI8400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b801c8d7fa1097782b5821a45792bd9f9a5773e91d6f6e8b4b942ea367bb00. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BREMI8600018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24385bc4fd98e36d363d8506ca435c984a22a127027ee626b7ad6e558d85853e. 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/BREMI8600019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac92703b76b79f6de1922f0f7095f9ec5bd94b86ff54a2fffa0c639dd2705d50. 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/BREMI8600020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f899dfc1042d05922b041180f6ea4c711111737f0105e343fe551f2d45ae697. 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/BREMI8600021.
Chuvas De Verao (Un Chant D'Amour, Un Chant Dete)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a625ccc56b7c2377dd38ae67c720122ac3a4988a795fdb625db65a2ac1ab14. 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/BREMI8900032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6ac05c6ec7281de9b615e5801f2ed6a9727efd41b067085f8dfa7c55b14f67. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BREMI8400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268ddee70413a550ff19fa21b5deb22900210b7857f4ae7d07b8545798572e55. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BREMI8600022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18eab3a0c220454086ff888078ca1fd97844e6b3dd1d6b43e66847c4c70e63f. 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/BREMI8600024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x329663ec81d4c0efeb1bb4465376f0be69ffb7d7a03c58aafd205d862342574a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BREMI8400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2cad9b928ed9284e61344e82f71cc9f860a20e8fa39fb0a3b746727372ab59f. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/BREMI8400024.
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 0x62195e98e46367aa2f663e9a9714dc2bbfd9fc0660a3d45db1de3c6af7b2c168. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/BREMI8600061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8ee9012f39d0b3067b7f68cffa2cec5d0030d45b9bb6f7cd963a3368693291. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/BREMI8600032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb322115b8990c04d34f9288e7aeeee814879a9a774468ff101ce00d2642c74eb. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/BREMI8400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6db6ea616df660adef54a1c10ec13a18ed432e05469ce4f976b6bb22f6d2871. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/BREMI8400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00099caf6e2d6f9c23c01d09442d75554a22c1e588d0bff39114f8c4e381adca. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/BREMI8600063.
A Vida Não Vale Um Centavo - 2005 Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b2c59326307e0d131eddbebb66d7482e274e9610c2420bb23e2a0e08a49f26b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/BREMI0501520.
Amor Paixão (Midnight Sunset In Town) - 2005 Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb453dcbe3b6b4a11bc276a0984588a553f5ba6ceade73467f6e30b9092386337. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/BREMI0501521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f545fa4a3fd0cb1e709320175d1af07d0be9515d89f08c390960b7627891d6. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:01:12Z), 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/BREMI9100668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a142e6b3f0fc7272697262d2bcecda175f45dde3390af47d899d9e127453be. 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/BREMI0501524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc8b16dc0986192a6de8d2fd15f3884e2f4212ff3d52fe52004d6694b6c6e2fc. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/BREMI9100669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816c865f3fbaa57ac802c4927fac7e61ebcd9503685a8df307df3c23a269f1fa. 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/BREMI9100670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe28b2cf14715a58d881c36232b2664bf4b68f4d91186c8635069628fd863b4e3. 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/BREMI9100671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f2a69fa8e5dc32f6096b6e83457cae841f15725aa91bb5cc806ed6463a28fd6. 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/BRJLS1400220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f56837791b5fb0c6ea325826e7353c1da6d39110151da2e094365c9ee5bdb7. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/BRJLS1400225.
Grandes Sucessos: Músicas Inesquecíveis (Remasterizado)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488aa4520387723b56556b6e842f0d639d009c52ec54df27f8f4eb2684ffb9b3. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/BXP1A2300001.
As Marcianas Cantam: João Mineiro e Marciano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81332d481767f7502c69a617512e13764d81750d94b73ed65a078e53e7fbbafd. 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/QZTVM2505549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf8a426b04ca7a5265177443579a57ffa791ce219be7cfedf11851ec9de946a1. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/BRJLS0900385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c64960e442266c0fe94382837b31d7e7903fa621dd0ebf73f710e6712a52f68. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BR10C1400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8538e357af0a4bc52a2a2dcf12ba7c414661acd1913befd6a5ef7929349a4b5d. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/BREMI8400695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14bd67f0547c385911ce0cbf5d9f0e827635daf755cb570e8e90a3912cb20cce. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/BRJLS1100177.
Joaquim & Manuel e Convidados nas Rodovias do Brasil: Homenagem aos Caminhoneiros
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ec5404af370d0d3c0c52693c22d2e525737084f26f2c1ca36ec93da4f665e1. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/BR1OC1600412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62754013c1ff70a80c95ed41f400015d47ac7b2b75d5e86da5546067faefb050. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/BRLSR0302434.