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 0x0a5b8852280b8fabfe31506ce80a13515019277812a3e8fd80410b6b5809b11b. Chain 2 (Bitcoin): anchored in block 953808 (2026-06-15T16:45:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ee5b15f0-ba33-4ea1-b066-b449d610c49f.json and https://artists.proofprofile.net/proofs/artist/ee5b15f0-ba33-4ea1-b066-b449d610c49f.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 0xa08635af2d586b23388a2f68d9e1a3dc07f7596ac0e251f31b59ffd8630ff4c5. 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/BXY8V2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2033531605a8a92d0f7584faa9f64ca5cfac3ab7d8b5e48a442baf7966ac1f45. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/BXY8V2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d882231cbed1c676340be0b007c9c7186e105b1bb81b697d60130ad01894708. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/BXY8V2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09641261aeb07ee9a1771adc7e69abf910906420f79b25390bf6554d28ce41de. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/BXY8V2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c623482bf291a38b2db0d5d76f53b3951abb1d6aae53382764ad850a16ebd1d. 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/BXY8V2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd74bdfc99c848c45ad6dfab53fb1365b6eb4b6fe946c30fb4cdf386a95146124. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/BXY8V2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f13871961020ebb867cd212ebcde7978171b337de121068b7e86ab7da5f91c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BXY8V2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9142c68eb4a4b966bb28d04624a437da1bcd3f2f05f420dc450f259c94025f. 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/BXY8V2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e44d3ef7589517b67a5d3da43101bcf8983d350cbeed0f7e363fa5d1bfa0af6. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/BXY8V2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36e0a020775aafa75bcb0afbe03029d9bf15fcbf55f2a4ae2716b79f5efa845. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/BXY8V2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf9be6c24dcf5e7536f4ea4e48dd7b3b1c0d588c74b74ab70dd8a02e2ff65a1. 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/BXY8V2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e547faee7d536d88b2ba0ac5ef446f7ffa04f74f1c5880b79948234f3b1228f. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/BXY8V2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980e8a99145ff1268c1f02d30ba12ca7f4e162eb4f897c685bcea571580f8fda. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/BXY8V2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01544fa8084ffb28d8e020132b532de42c1e2cc070d543bef71b1cded61e613f. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T00:53:33Z), 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/BXY8V2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83487273a5b6e07d8b9959973daa675d661856c1cc70713cb5775ad04148600d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BXY8V2300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8553bc88610c0108efc3b0cf3dbc87b7f591a0bc36ddbbcedb4c617ad4e7c8. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/BXY8V2300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6ed703689958f3493ae31d3030130c710d370101001a6a4a42ec33b3b2552c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/BXY8V2300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d2dc0d492ac213ade0039f28c70cd46c1daf69c08febe3dcfbc76f8cd06b955. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BXY8V2300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e60d5df0aa8a574435673d4e6cc49c9f1cb18051f15b887618051a93ad3981. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/BXY8V2300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be6987989c59f5e6e950ebfb81d043b821a5f8fe14cdec981a2b26343be22ac. 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/BXY8V2300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4028e334a512cec9e3dc7bf459d3b3f0441c9c94e4868b5e3359aa24cc086f56. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/BXY8V2300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8f10986de6cacc2726e61932b2318cbd86859b9a686e75bf31c4f751dd80b70. 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/BXY8V2300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f8b6c6f3720ea58293d53a72ef376141005cd44e7b4cf12f65755fa7488675. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T13:24:39Z), 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/BXY8V2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x633341ae0f5b11f9ee45725e2c870119423f645670ee36253a82c89c8b566e6f. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/BXY8V2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc42e5551717fb0bab6631a7d73ddbb0c81455b84efd173c87d792ab8ca401d6. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/BXY8V2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3007b2c7d723437b7ae7da205cd1ceaeb7627f4fa820d14df193bf465cd0d779. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/BXY8V2500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb074dcb7bf7dc85d63716245caeb0d9d1c2fae4b2aad0ab1c806e9b6a0248568. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/BXY8V2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9806afa670ecb1acd56badffe0f8004a459dff4738058a3a8e8aa0260b134483. 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/BXY8V2500006.
Eu Vi Sabiá Dançando no Meu Pé de Laranjeira - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c5070fdfc27dd1d16a35eff6f9d68125474e7f3f88d551d8e7b39aacdc792b0. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/BXY8V2500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b0d8fd3627aa2207dc0be3231c5a755543a4bc1e5da7255a0c1f4012b5b378. 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/BXY8V2500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b852fb7e23f337782cfdebd3c6c2c8bdd0540634d2570aa4d1941b9cc1b8eb. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BXY8V2500009.
Como É Linda a Pisada do Caboclo - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe4e0f5cd6744cd97c55fad199199cde6388f589b523ceade7849c75211a90e. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/BXY8V2500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd2c9a4b4aaa7889068b15019ea30e98f087ddb46fac02a7410ae13b42206c5. 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/BXY8V2500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef3c0e92a68d5d1a4c59015098096e726815e6872789a577b0115102a2f5b23. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BXY8V2500015.