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 0x5a362d5f5b79bc0136b748aae3cbe147c58192d241722319f32af1296d25bdec. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7efd8c65-e97f-41db-9a0b-07e14bf86c44.json and https://artists.proofprofile.net/proofs/artist/7efd8c65-e97f-41db-9a0b-07e14bf86c44.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 0x2be08f5cde98b1ed59b7e6051ad03db2933630eb567459c4558bbda9561eb23e. 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/BX85Z2200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8444a658ddb50f216c6c62c5e6e7ef7eaefde16f8650b9dc11ca5e139c0e88b. 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/BX85Z2200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3aa80faadc6aff76bf73a07b88322461054997a9d8c26d10563fcc2f76a5fe. 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/BX85Z2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18aaac80f0c00b7daeb17947243d5b6d132571c679ee3ed7d0a834ca06b82518. 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/QZ5AB1816579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f71e5ae9adb35ad659361e0808720147fb824474bc847a4e8188f34ec63f155. 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/BX95V2300001.
Essa Noite Vou Me Embriagar Com Verdades
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf86cb36eba237f8ff6c2a9b7fd6636ac8d693256dd3ff7a70273145e4823dc. 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/US7VG1675676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3549dca574ecd262bffed735a04cfbb1863423890419bd63547c74983aab6100. 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/QZ5AB1710192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae31309dc4b687401f0e89923426dc12ac8e2de73d193ec2d990f52dfe28cea. 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/DGA052478479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c48ae2e2d36f8164693dc3ea5c7f1343080a5e4a9db9321ed3a239eef5f6410. 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/DGA052478480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522a5b4bc4bedb3f7e4b4e4a31ede8931287f5c22e7a2fbbb321f641243c339d. 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/DGA052478481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2881de50f24888cf22a6706b1a5c4ca7f40454af2fb8474ddc108b21199f7f0. 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/DGA052478482.
Jóias e Mascaras - (Quanto Me Matares Atires no Peito)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b15d1fdd7cc11b6fd26060e8c6c26971d2cf4ba8d083250da536d7d1bd2cfc4. 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/DGA052478483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5391adb42e016764596b05fb397c88b497474ff95633dcd02b4eba697f2ad11. 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/DGA052478484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826e46c1f0a60f520de2967339ff8568a76e78b4eece1dfcf2cff17046a14ce7. 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/DGA052478485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33145906f1960c11d31c00ab597160b8cfd42c7debe73b9c150cccd191341dd5. 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/DGA052478486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46850a587633643cd98952e8bb6408936d2429c39be0f9b6c728cf013c3c66fc. 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/DGA052478487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332a17b0f3fa044b09fee1d06bf84d724e5dfca24806efbfd300df0a2a37353b. 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/FRX282449558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a99f808a1fbb898bff57e928d976a51ab459d4fc4cc5be1072c94234b20fe0. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/FRX282449563.