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 0x3ff116fce20e19b44167158bba1bb5a278101e0ba3a67293d35c78bf742cedb1. 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/bed83d37-7fbf-4c74-bdc2-545894883c75.json and https://artists.proofprofile.net/proofs/artist/bed83d37-7fbf-4c74-bdc2-545894883c75.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 0xb9ab46de2c4677ad37c56f67eb1df32c5d9903ee8fec331e56d7c21e35cbe54c. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:56:03Z), 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/BXPNG1700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4877b64bc64b00a0e3152ee2fa051b419cdf419fc7c6a337a6b26c672e00ce8. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/BXPNG1700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235fba36148096dc3d421ff5a949c89e460288a3265e5e8f2cd64445146324b7. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:19:20Z), 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/BXPNG1700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02bb617bd2bccaa28a2ea1421bb1ef725153d19edf60ce2ac90e803c49fac75f. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:14:01Z), 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/BXPNG1700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d86fe8c49fcbde8b4a6f0a28bab262258d3b8dcde2112e958dc85f68bd8c551. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/BXPNG1700003.
Jornal Blues ou Canção Leve de Escárnio e Maldizer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a807e7548d69d3e5510a0f62818cd4251c70e4ffce9f90523d4b721d1b4d41. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BXPNG1700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05770615691508e6460cf3fbf4f89e01b932171870dda51527e36b549f0df6dd. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BXPNG1700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67f462c67e4040be88a6b1bb7c8cd538ac43c89a4a8f2437848208064914bfa. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BXPNG1700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62689793f9508681142d896818f064ba35c2554e3566cb701330630c4b8f701. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/BXPNG1700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ab46de2c4677ad37c56f67eb1df32c5d9903ee8fec331e56d7c21e35cbe54c. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/BXPNG1700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235fba36148096dc3d421ff5a949c89e460288a3265e5e8f2cd64445146324b7. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/BXPNG1700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2f2c7baa055c76ba3d0c4af58f7c9884d1b1318f3e4cc7cb9276bb7219a053. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/BXPNG1700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d86fe8c49fcbde8b4a6f0a28bab262258d3b8dcde2112e958dc85f68bd8c551. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/BXPNG1700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05770615691508e6460cf3fbf4f89e01b932171870dda51527e36b549f0df6dd. 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/BXPNG1700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf0164a0db8191f5766389338eb960f4e43bfa8467a2cb1996fdb58834a60daf. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/BX9ZT2300170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6069e56f1f4673c0eb341658c9dbb66a353b7ffbd2cd54183f9df571e9302ee1. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/BRPBP2400062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x157114ea96783065272f3304dcbee862c8b1f9ca564576cf04e6326fd6abe145. 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/BRPBP2400063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0814a437b4bf2d8c55524b064fb4bfd5daaee6ffa02234fd2caad560d26647af. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BRPBP2400064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43eb86d0f5c5496fe5a4c0f83b0a741a44a23944f4914858723da237b438a891. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/BRPBP2400066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b556c13459bdce349de971dd506daacb772742cec6ebda650242c70643a5a8. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/BRPBP2400052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a9c3404f5cb288d9e28f83b7f41c27751aa5444e11a351a03ba1d32bd84d44. 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/BRPBP2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a469b0b599a2245799edd273497d479177e50e7ad5f3cfa0296bfa55c620b3a. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/BRPBP2500004.
Estrela Matutina (feat. Juliana Linhares, Daíra, Pedro Fonseca e Marcos Mesmo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c024675b142f143973800eb5c0060c50eb885f203281cbfa6f418b70f828725. 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/BCKON2100064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc988b79d32921d84385c756aa34080495fd44f35e1ba831f78f171eafbd874. 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/BRB581100122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef296f060aaa2ab7729764979ac53ee7211a03c1329124df9eae7c4ced7de725. 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/BRPBP2300027.