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 0xee3fafeef9c2fc25f72aeea2dcd02b0c09f58e89832d31052eaea94f8a6e84ab. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e8b84bd9-b280-4bc0-a1fb-b5aeaf857099.json and https://artists.proofprofile.net/proofs/artist/e8b84bd9-b280-4bc0-a1fb-b5aeaf857099.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 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 0xe7bf1808a83eb92dd7897ab4bbe36ae86c2c28376a9a0de1d743dc66726239dc. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZEQU2116720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e74bd172a26d0b2436ea0ba8c9e774b6d45822fd29c83a1c723b423e7b802a. 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/QZEQU2116721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ce9dd7f267356482ee0a83dd07df74ca396f9d5d7446b9fc674ea03a067a57. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZEQU2116722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c04ecf741a01ded51030d1bb0824847649146b639fd152c497f57fe00b2bfec. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZEQU2116734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3437bd8369599daecfc6b51f12ed78184e58a178c6992a23e4803c448eddafc5. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZEQU2117536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x951f24dfcb6d65ac1431e4f64457d10409a37350cf9926ec402aedfb1d8ac424. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZEQU2117537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc88b57ec323c8dacc74a915aae7d84d28a09314b3bf9b36aba149eec54ab3c. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZEQU2117538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33dde0795b8091160dca1e37eebc283c99cdbf0eaf9289ff249ad00d58e31f8a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZEQU2117539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06476b1b5b39aeae8dd39a6df55b16ba28d8805cb55c7eca973479d0c947a878. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QZEQU2117543.
Arrocha Sertanejo (Ao Vivo em Olindina, BA)
Boteco Beto Botho 2: Para Beber e Chorar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be05b38c255a4ef7a5c69ec3419368f8924d4cc8d7c8ab466913b690359bf1d. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZEQU2116754.
Clássicos Sertanejos em Ritmo de Seresta
Arrocha Sertanejo, Estourado nos Paredões