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 0xed9ca54202bcee59418d206d633fac65d397a49b1cb768d2c31b508a7140135a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/47f309ec-f977-40a4-b81d-3d8480409498.json and https://artists.proofprofile.net/proofs/artist/47f309ec-f977-40a4-b81d-3d8480409498.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 0x19048d29f137efadeaed43d208e5776cb0ea6544a285fd8b937fededc98e0c62. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BXXO72500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a32273e20502ab4e3cff4b865c4ee28804b1f367dc5fab06f6679996730d77. 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/BXXO72500003.
Assino Com x - Roupa de lua de mel - Acústico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0513a20c060e256cd48f18f19e0add2e84267a25e4ec92f6aaec8c321debf532. 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/BXXO72500004.
Gruda em Mim - Amores São Coisas Da Vida - Acústico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ea230806ed0c91979fed54a40c9c64cc51fcc4fd31d0fc01f0bc3034191d8f. 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/BXXO72500005.
Não Precisa Perdão - Como Esquecer um Amor - Acústico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa573154bb2481d635afc37a8841fc66c407bb96425ae7474560faeb642b6fa1b. 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/BXXO72500008.
Brigue Comigo Mais Não Vá - Borbulhas de amor - Acústico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bafdcbaf81c13113ea79f885d6dba40d72eec12c9e9ce4ec206a90ab7c4bc3a. 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/BXXO72500010.
Paredes Azuis - Se Você Quiser Voltar - Acústico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c1f5d85ef965f6852af8aa733ebb544bc42b1f4088df7822aae2c87ff992f4. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/BXXO72500013.
Você Não Sabe Amar - Taça de Pranto - Acústico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060a637b552095464a7088f88cbe52d681d7283ab715653f8b0aec6800d53829. 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/BXXO72500016.
Hoje Eu Posso Chorar - Ciúme Exagerado - Acústico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86fde0a9741960c8a063f0785905260676bd5c21b690fb0070e65471d888bf16. 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/BXXO72500017.
Credo em Cruz - Paixão de peão - Acústico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de42bed43480a830fbc43aaa62466df4eaac814f39dc8708294b186c9d5a88a. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:49:03Z), 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/BXXO72500007.
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 0xc6bd4ce61aad07adaef367f44874a23a859d62220bcbef89a971863f73665979. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/BXXO72500006.
Frente a Frente - Não vivo sem você - Acústico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d371562d56c1958b2455e7787e75e73a356716d8a3e940eed2899541c7f37d0. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/BXXO72500009.
Amor demais - Pedaço de Minha Vida - Acústico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd352efbdd43c8a3e8067be072ca4a3b6d4b15e77f98e2e8e2f09ee5eeeaba7b5. 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/BXXO72500011.
Mil Loucuras de Amor - Pra Não Morrer De Amor - Acústico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b2fa53dac18c17df482149552b99985da726cabcea775fe747d357c7ed67c7. 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/BXXO72500012.
São Tantas Coisas - A Culpa é Sua - Acústico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df09eeebb0610ac1989b799df9297e26b4cb787f6783a1e8a246918b60ad8fc. 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/BXXO72500014.
Um Bom Perdedor - Frio da solidão - Acústico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de606fd1b541bb674fd5d32c58d28c3bdfa104ae59df0bced5ff80f36c8cd80. 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/BXXO72500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e441b8495d4d2ce334196075d83bc874325ba946f7cdeb7567d30b95c1d276. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXXO72400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53bb379c602cbb6e84d128e77e34a884c22f83746e4d7bba8ec1cb093f3d16f4. 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/BXXO72400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e441b8495d4d2ce334196075d83bc874325ba946f7cdeb7567d30b95c1d276. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BXXO72400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d59c52fc4d2b82f4a1ec5f07440ac67ab7a09cda462b541dadd5fad1d418fa. 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/BXXO72400002.