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 0xbaaf08eaa6758e5d9f011d11f04b42228f2b0dfa0763fffe01a0f1221661e499. 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/8b3b2082-959d-4d27-b89f-f292ef96f699.json and https://artists.proofprofile.net/proofs/artist/8b3b2082-959d-4d27-b89f-f292ef96f699.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 0x78b35183b1e65f1b8a7223dec84fda534e0c7847d7752f8d7db9345f9cc22d13. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/US7VG1718879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e8bb0c3fc0fec05aed392e3deda41622e0350134ea8ac5d5bc4cc2492d865d. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/US7VG1718884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6ae79d3973dc41d6eb944cc2f9a29a138e90708c416a025379bca80a9b1236. 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/US7VG1863478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1256e437a35390e36b029f9a7dd4ae03b90b41ac06719df9578692cb9b8b44ef. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:32:39Z), 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/US7VG1863480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62fcd321ed1d6d6b09aa77b5be8928cd1e7c1d9e50f26f1ef8da059f5256effa. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/US7VG1863484.
Almirante Negro (O Mestre-Sala dos Mares) [Cover]
Almirante Negro (O Mestre-Sala dos Mares Cover)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238d84dde01e221bdaf83db29b1f6ac99b2881e22b6b114b80589f3af168212a. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/PT3IB2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa791f52755397a3258bf622a4b87bd25bb72c4f7af4b64df7b2c4c0341151d61. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PT3IB2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2acbe436202cefb4e9db895525ba249f50046610b6565dbda3e43b9696b6c7a9. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/PT3IB2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252702f9b26760e34351e56a774302483f772f47fc734e0de2c2b926c7e325e6. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/PT3IB2300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4299bdc92f812a939b83a0d452111cf4566226aae836053d2f8c043b342234b3. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T11:23:38Z), 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/PT3IB2300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d59f8f57e5a1e0209fee63fd93114d29b8681da009fa11f1be5dff21c59a600. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:36:15Z), 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/PT3IB2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42075d4d2843005ff2ba27b406414969073f484b3bf5f01e844c87447d627f04. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/PT3IB2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d28f960b311dbb27e50ba86122c01e9e23bcf9439233033d27faae65849566. 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/PT3IB2500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb333513cac9c00b555104957706829622c89b3502e3e8bb1a4deb128c834daa3. 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/PT3IB2500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b81ce0aec4a89d155b746df488a2032453247d56d36b39d29359da8cf234e1. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/PT3IB2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57433dbed66b412ab8834d2b1a2f3ee2eff19c0c7dc150062b764125c1bb46cc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US6QR2400113.
Best of Bossa Lounge (Millenium Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x452061247f435974aa93ba355293c814da46badd4857e55339229a8fbaf1eda6. 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/DES402100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c7d4272d74a5ffd24163989e19e3204383ebb0b3cfc679dd87afec657feee8. 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/DES402100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x448839bafe69e4e489336efbb2bf568c8d2e97293af9f11bf37ec54d65da0d3a. 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/DES402100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda2b169f9c814f3dc20d7d1c4666406757d436a630fd8f439fbaa2ed37a9ef5. 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/DES402100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e27a2971e2edcd0e43a9a463744d3ab0e67760d206529f5024a70aa4f7deec. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DES402100036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbfad2f708193c9358e1e22d7fc6cdbc717b30d694e5eccbce752307632b65e9. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/PT0HV2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdebabcd59a6a206c58c1f2a65fc3b9bbf13c261c8c75d8407fe4bcdd2a473a9c. 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/PT0HV2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbfad2f708193c9358e1e22d7fc6cdbc717b30d694e5eccbce752307632b65e9. 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/PT0HV2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c176c5e7d7dae2eb95c6a3d2c8ff28b6b16a65bd33ba0d2816f55f22cd540b. 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/PTNS11900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7efe667030b1d48245c8e8dcfb056e560c2da8548a3b99dafa45ba7fb3e8dd56. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZNWX2241183.
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 0x5622c6d36a45d4a5ac9ddcadca7db2887c9eac05fdaefc4700c0146138a2fe03. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/PT2MD2200008.