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 0x24010321b48abd0703db5f74582e583d5b201fc6b25a56e13eb91f3ab1927f35. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4a7e6e71-18e9-43c5-b86d-380082bcdb0c.json and https://artists.proofprofile.net/proofs/artist/4a7e6e71-18e9-43c5-b86d-380082bcdb0c.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 0xd437f5491c9e0d120f524bcb702c5fe88bf580a5c72207894e305c4bd69499da. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/BRUPM1200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82fc159bcf7d571c562b69aac679ebcc6695d9dfcd8c5dc70f2fa65f8af9554a. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/BRUPM1200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2504826e13e86bf76bd28c6b738180642747a31d2b641907e49f48e8023d29c5. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/BRUPM1200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ccd89beafa852647f62209f7c276f69d60a1a1497a1a2fb77065822ee473b5. 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/BRUPM1200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae57b9c65d266075a2f4dbc200986f2cde3f290b6a296857ab47e397a398ebf. 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/BRPOU2000096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923f220d386e76b18ded9ac6f641814871d9017d0495d95e271e5b3589258c99. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/BRWWP0300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a435ea1f9da6674634d99ada824e8936823bedba69f4590e0f25ba25bfcfd77. 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/BRWWP0300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7bfd605119c99ab3ebe1a82ccded918499dc52c9cb0871987c5fb5177ce5da. 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/BCDO32400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59047af81cf6a3c7874de5649a4837faf0f6642ff233452236c73cd691db86b0. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/BCDO32400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb2ad3f97380eb27ccc4f8b8fee18296cb71e60f40772a1ee9a1dd1aa2f6a2e. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/BCDO32400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd50902dd70ebdd702484b938059438916731f32ec9f2809bef6f14fdebf496. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/BCDO32400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f14fbff9ea9497dc7a4bb6919e4683277afcd0d30da284dd78b1adbb7e70c33. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/BCDO32400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a5ad50c4f0a78cb98aba9f2c5e23edf0b5880ea6f23d0c1667c05af2baa932. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/BCDO32400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4818e02947c1058d4e85a99b0d8480be3cee4543b2290c77faab1ec8717b1b17. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/BRWWP0300038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbadb09731ef5db736d6f5c793519ca836ba2efdf72c99ccc519a7f55af3218b5. 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/BKAC82300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2976b38d99f1c24e67f681d9715a823920871fefa74634004d8a4307b0c012f. 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/QZXLZ2315257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6707294056f56f225c5ed602a804f9507471eb8c9a60c31d6b22c48901925956. 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/BCDO32100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56294d1593f31252970e4371039898e9446af84cd402d263f9a0d9e82a436dde. 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/BCDO32000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41385f8756396de5785775cee19d23635e9cf09666da76bb6ac04741258520ac. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/BCDO32000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb268723150083616e5b29715d58cd5b391abb1a78073e569e1d3ed32f5be674f. 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/BRUPM0800030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674861b6ff108b3fb9503865c9285152bad062e2fd3c7ad1050525c445e81c4c. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/BRUPM0800031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41460d4e26ef465a78075aa9619c69f9b3a67762b7c921bdb0cc2eec67bb1213. 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/BRUPM0800032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd43406160ea6cbaf4c815e983a819550d3aa0cf10427edf1cdc3e37c6955d7. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/BRUPM0800038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a20d3b709870033ff8a80dc3f90691c8ddfc99f6ba20abcdedaa992885f2c8. 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/BKAC82300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbadb09731ef5db736d6f5c793519ca836ba2efdf72c99ccc519a7f55af3218b5. 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/BKAC82300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf225d8f979226639b52ec4056b9d6539a6a22cf296855e3cd7c9908a0e78d9. 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/BKAC82300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ddffa0c423dad038183028c3afb80d76792a7defcc18f664b7defcc2be78a4. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/BKAC82300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62143d01e4a3e6694b4c5b838af210119716d5333266a1101eb86526dd665178. 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/BKAC82300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef058cbf9b4cfee71b1a4689823a91f0c837b5d2464a66f2f0f6dc7d75e1e238. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/BKAC82300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ba7e3900666a0d2c3d45f399a22e0875e89b17d706b4c154a3107d2600699b. 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/BKAC82300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b49dd6874e530a866a07fd5f96a6eee582e8a8365112d945169c588f9c96a3. 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/BKAC82300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a585a173ddc7e980b84d3acd04d6fa9f5ec86eb04bb367f2d678c7c742a4e15. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/BKAC82300006.
Bicho de Pé Convida Giana Viscardi e Danilo Moraes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52a1426fae85e348f276f37d8f34063e67e6e14ca7d320e75f1d4c540918f15. 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/BXD1X1900027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba4ebeaa80d199027b4df8fd3c5ade0feb3c1dc12df8130fac59f2bb37b64ec. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/BXD1X1900028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cece9ff62534ed28a86012db4b3756f8a178091b6c61d34b239466f9f968ff8. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/BXD1X1900029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d3cc5ab0d9ff25ced3b97b86f1bc7cd457ebd530d485e0d76713b49b971a656. 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/BX0822300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f1c8222c722e1c6e8d62ca333f8f5abc180b9b583b5218dfc12cd308d38117. 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/BCBMI2000002.