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 0xc68ff5d8b2bffb1da9c43a21be1ebc5774728f9884b8c14e1254bb8bab9a1638. 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/662853f9-bdda-4d49-b4dd-999dab586399.json and https://artists.proofprofile.net/proofs/artist/662853f9-bdda-4d49-b4dd-999dab586399.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
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 0x364f744ac8cb8e6c7cd11e13d060b34e6e85f5b30326a94a623a5df39e06c709. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM3DF2279498 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6085937d8a943b831ec7d362e6b3c61b38b3cdb3c3d7c0ac57feb3820bc68e2. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM3DF2217852 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47442e90b8a2337bd8e6fae92bb9600793efe0869cd3d9d2ac6fbd332b1342f4. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USANG2225469 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x007160ddfa1a4ae3f7a349c7c8161394f700cb221a11d766df8fe4cee329c110. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRTRB2203387 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d1e9c095b7f598a0af37fbd047baa5264d814e028db3a78d1c91f20c77cff6. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRTRB2203392 — a six-check JSON result.
MEGA FUNK - SÓ AS CACHORRA - O BAILE TODO
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc748b212974580058da479efee45cf07a52877075458ac734eebba75275577bd. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRTRB2203393 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae0bc9d1c52ca3239f6112f32b73b7984037228e30e388221f93e35bd197b715. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRTRB2203396 — a six-check JSON result.
06 - V8 MULTIMARCAS - ESPECIAL FIM DE ANO
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02263ed5c83c400f06f5238fc4b0abb46636a734b645f962724c63dfb127b23c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRTRB2300437 — a six-check JSON result.
07 - V8 MULTIMARCAS - ESPECIAL FIM DE ANO
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbdb285a580af5049aa91ae7e521878dc9c1c43038fa4aca6a448cd4e6b01ee1. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRTRB2300438 — a six-check JSON result.
12 - V8 MULTIMARCAS - ESPECIAL FIM DE ANO
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8dbd3f12357dc9ba0c7c486e236cfe72fc8e17227911635762b8e8168515a9. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRTRB2300440 — a six-check JSON result.
15 - V8 MULTIMARCAS - ESPECIAL FIM DE ANO
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc37be7fab2bd384990f4fc399133b4855541433d118a6ddce041c3c20e9268b7. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRTRB2300441 — a six-check JSON result.
19 - V8 MULTIMARCAS - ESPECIAL FIM DE ANO
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5eea7c6c3aa9f9a31d36afa06378f2480343cadaf82f8f48e4cd2ae724b141. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRTRB2300442 — a six-check JSON result.
27 - V8 MULTIMARCAS - ESPECIAL FIM DE ANO
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaabcbf9746a118954a487921fc19f07f31ff39604230427f69a4baff814fa8cd. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRTRB2300445 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6a6a107004e3e851bc683ad322bc372cc4c2ba68c2246dcd3ba7e7a9f96bb7. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX4IU2313512 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990aa386d361743ab5e072ac372f0dc2a37b7b86d74eb572d9d7b4cc7007ff61. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX4IU2326600 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab3213be06f8e80cdfe09ed38d8461295b73c9771a5d3dc8deb35336710ccc1. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX4IU2344578 — a six-check JSON result.
V8 Multimarcas Vol.21 - Cd Especial Fim de Ano
08 - V8 Multimarcas Vol.21 - Especial Fim de Ano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4e5fadfec41113b0dadf993e01b3571d318a621c386a1bb54feedd59416342. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRTRB2401428 — a six-check JSON result.
14 - V8 Multimarcas Vol.21 - Especial Fim de Ano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2e75ce9f7de5f1f2c63f3c3916d6ce86cc10b5c0486660c9ff3dc061303a14. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRTRB2401429 — a six-check JSON result.
18 - V8 Multimarcas Vol.21 - Especial Fim de Ano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2fae18c39a35d3780d7ba86e8580db7738ffea9b5684a4901e9778e4ed74715. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRTRB2401432 — a six-check JSON result.
20 - V8 Multimarcas Vol.21 - Especial Fim de Ano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x525337e491aaf2ed3d648c062e6cd4f760efb8963cf5e16332b8b04db3fa4e06. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRTRB2401434 — a six-check JSON result.
21 - V8 Multimarcas Vol.21 - Especial Fim de Ano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57738427f41d2922ee9d7526948f75c62b9f29c1818909c562730df692f0e8b0. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRTRB2401435 — a six-check JSON result.
29 - V8 Multimarcas Vol.21 - Especial Fim de Ano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3111977d358c7c045ddba8e2e3df8166a17bee38fcf41f6649bdbbe68bc0e4d6. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRTRB2401436 — a six-check JSON result.
30 - V8 Multimarcas Vol.21 - Especial Fim de Ano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa324324dce1157793de54c6b75cdb9b92fcaf7580c54ac29b83e7d8d335e42c. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRTRB2401437 — a six-check JSON result.