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 0x1d3908fee52ba5ac85cb72c26cde88d095762cd25f5b7ca8cac3c632b7348d1f. Chain 2 (Bitcoin): anchored in block 953717 (2026-06-15T01:05:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8792940c-ceb7-43bb-9884-fe20e606efbf.json and https://artists.proofprofile.net/proofs/artist/8792940c-ceb7-43bb-9884-fe20e606efbf.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 0xcd973e7c4e0fa9780ff748dd01b8e73815ae9787b182fc1a492d400befecf7c3. 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/LBPLA1500168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841285c5f9f2550205177a6e4daca1121b25569b900f3698739a91d427ddbb3c. 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/BRROF0400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334c78bac2af7129b038ec3c65ca07cb1d5b686d01b1534738f2e3c79b6b70e5. 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/BRROF0400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa8fb318a48d88d272166e5f8dcce40000ba605ad8551bdc259f7454834d075. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BRROF0400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2692be7a47629d857a410ca40faeac20a9bf03e9bdda4e957050b9dd28ed2e59. 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/BRROF0400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d4a9c8a8b7dafda42cc2fd8d874e87b99ebfbb3cd7a361a3cbaaa54d12794ec. 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/BRROF0400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd822ec723d3a3edca4f87d11bc44e50401aea9142a2093e47c41dc713c28ba80. 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/BRROF0400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbaae10b2c1f8549d01843ded0fed78479862ca3919fe7921c28e83f7ecdbf10. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/BRROF0400012.
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
Quem Me Ve Sorrindo / Sei Chorar / Alegria - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4106fc7c401fec78c5ce23086dc12df05cb135f53483ae41b6a82e6320bb9d. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/BRROF0400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea64869fcee317b116c993acfc8e66201e8afca07473772f30da6a34353d5e6c. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/BRROF0400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a20b205fa9e6d884b8f73e12f9c5ffe53f81c867b2f31da5748d5fba74d78a4. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/BRROF0400003.
Tempos Idos / A Mangueira É Muito Grande - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648d2492bb61d4ec4ab70ee91c3f67890de5538fd8eb80022b9e479b57c31704. 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/BRROF0400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bdb4566e1d9c52fda3ea3f58743fae8e8e02b9585daadf948cd7742393eeced. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/BRROF0400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe4e3213cdf0ebaa35b4769dc8bea863dbe9e9c49a50ce0385bcbaf40679394. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/BRROF0400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87723d431c5bbccd3d18e25274bff647e7b9f91d21f72f1c495a45ae0946a79. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/BRROF0400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x033f4053154b6aecdfa0a71ebbed63f757492d4bab3e97fca34861cae7d287f2. 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/BRROF0400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ec36f7c438947c9f3f8341457b2ba096d8115c6cce688c34a2c0ffe0fecce1. 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/BRROF0400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99d1a6dc3e8591b245f37a61c888553d7a8accc888c95fc8c58a8bcd58f3658. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BRROF0400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d5b8d8ff39be2523075b32d52ec8b81b8ed3c7e58c7130f7a6ec5e0ece2f8c. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/BRROF0400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758b46ac25791d9057e46f1939a4d535ff1a12b73abe75bd893e6ee680d9727d. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/BRROF0400020.