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 0x061d537032d12b7ea5a1b0e7d2c2f8cc4bd51b8933c0ae704b85e94d4c3fdc1c. 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/b0fbd3cb-89e1-447b-8e55-582a38b06fc4.json and https://artists.proofprofile.net/proofs/artist/b0fbd3cb-89e1-447b-8e55-582a38b06fc4.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 0x7ae63e7ffbd0b1d0d35cac7fef97cb45082c3abfaf7dcf773f1595a40fd87286. 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/QMANG2271815.
Esse É o Baile de Bahamas / Cavalga Sua Gostosa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0c8bf5bd70c3cdf3afa81d1dc4e5119656b5abd25bfbe5c24a6a19b37f4541. 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/ESA112450872.
Ei Moto Uber - Senta Pros Menor Do Corre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ba3e58a767203d83164b2806c36ad52379e7fecb2936f80db99bdb2dc4579a. 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/DGA0P2495965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd582a1331f4fe1f67efafc7758a5376d1a353325a9741ad18b4f598c73b10a5e. 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/BCFCV2401154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf02b4b3c1ef67ff04a287179819d21a0ebd4432dd0085bebe0821eb93330475. 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/ESA112446916.
Ufc da Putaria - Igual Murro do Mike Tyson
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd644396d02c249ec4fbad759bf0ce7e55559a5b7bdca2138f4d00869e3938e7. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/BCFCV2500204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a19bcef22288d267a1144ead7974e17b4b688260ecf981c680bb1aa0377bcb5. 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/BCFCV2500166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x402bcec1cd8a8bd013bb6b58078a0fa322aa51c5eeb6e19cfbe5752c8e71142f. 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/BCFCV2500164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9daf9b14f50fac21a6a04ba624d4fb3630d760155dc09389dad8c7b8e1074675. 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/BCFCV2500157.
Arrocha do Senta e Contrai X Kawasaki Ninja
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35dbd5d7ca21a9a8107205cba7da9ff4bd26018c820ab5539385e271cac0cb0. 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/FR2X42516049.
Vai India Gostosa X Igual Cipo do Tarzan
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85890a6ff56c2b324a76e9012bbd59e4161fcb8e1dd22902eb4f5ab59ba4168f. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/ESA112559319.
Tu Mamando no Corolla Vs Botada no Utero
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b7042f2c18dcc7d099bb246455c72dc05ce69d9653d8972a47ec2c63bc0dc51. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/BCFCV2500126.
Vou Balançar a Umbrella e Você Balança o Rabo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f4de16e3559ce3d7440703abc42cad94a53d364ffe67b439d764aa0fa596d84. 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/BC9MG2300044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e2545bec47c73de96da332ce43f1b79a1e4c6e0512cc548fe56b451858dc4e8. 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/BKGJS2300149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff7160b1f3cf9cadac11893b37f5dc6947c6d153e24375effc64b5d4190601b. 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/ESA112448341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029e1ff3b5415b05cc49ab6d18a2922511091f72674fef7c92e5edfd0b6654ab. 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/USANG2193410.