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 0x46c9cd24565e158a90b36428209911ee57f33b5654f3a3d504c69198ed4064cc. Chain 2 (Bitcoin): anchored in block 953598 (2026-06-14T06:40:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0c635849-843a-4a2e-a64a-50b65deaa6e5.json and https://artists.proofprofile.net/proofs/artist/0c635849-843a-4a2e-a64a-50b65deaa6e5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Com Quantos Paus Se Faz Rock`n`roll! (Ao Vivo)
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 0x74b730194030e99f450dc770a29e9f4d8ff53d93737c6f3a7a52695d7aa0a305. Chain 2 (Bitcoin): anchored in block 960210 (2026-07-30T05:21:45Z), 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/BR4KB1500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e42ed4a1ef5563d0387977cea027dd2722c79a33749b8223fc0aae4603ee37. 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/BR4KB1500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f1ce88391caa307a82318e5fd6b17aee724c07cd5a8a76889eca5e2f181f2f4. 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/BR4KB1300062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfbad9cbace9d78026bbd0a29fdb72a85d819ed4673d5d0d1176137265dc0adf. 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/BR4KB1500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0114bd3935bae499eda9f953b8da3aef3e4038d269bc9ef3cbb8b7075980cffa. 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/BR4KB1500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe395227ec23ded7f84db26d9218b272097fd01bf1802103a32d416753a1bd78. 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/BR4KB1500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cef7c081cfee0817db1dcfd89bb14cc476a9b1ee05773752f1badf69cd0a567. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BR4KB1300060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3140d55a3dc55651f39e8d4bc78e2c41c3fb2f7de33e4918502ebd44ebc28724. 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/BR4KB1300059.
O Mundo É Maior Que o Teu Quarto - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87796f8ff4db363c9eecf42bfd02a9e7f7e397532dcf66e7d969839897612ef1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BR4KB1300061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c7a361c0d3ba5cbd88ab1f10c0c9b93b8c7c947734786194777f966a2c622f3. 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/BR4KB1300063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c64162da085f25cc60752d8eea36faedea296be2ce76c6b91859bf7656b9d6. 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/BR4KB1500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec3a285c3f6183edc76d16dd8c866bece10f781e67866af2a83ce7e8e4acc8d. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/BRLUO1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7428583618a6e07be8624594ab5c6f4057a7967c36b935fbb1b428d8d885f831. 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/BRLUO1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e0490390b0e9bd81fd3072256f37f373ab0bba5e313a76351c228f55a4621d. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/BRLUO1800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7430763520a328e57f00be68cd10dbd83465c34faa681618e061203e5798592. 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/BRLUO1800004.