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 0x385056decc71bc40aec8766b47606dd5eef59f50b25e4d0ec2e9834807223873. 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/970dee7c-e0ca-446a-9cf5-5ea5a68757d3.json and https://artists.proofprofile.net/proofs/artist/970dee7c-e0ca-446a-9cf5-5ea5a68757d3.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 0x2ad62125a95d5178d26e8d9b303e653dd4b6e115be808ae0e943346d9e344814. 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/PT1IK1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x300eef710729f4b6a2633a8a79f0dc037cbdc73e0216a6583819ce0be7bce584. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T12:33:53Z), 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/PT1IK1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314120e390b452f41f2859cc4503f65ab08d60286f6d3f63d4ee912a3bf2313e. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/PT1IK1800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad23112751a46767173f24bb6032387461754023239ace484fc7d3fb4f917046. 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/PT1IK1900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e87ebb0b433defa259630d6264cd62419881ec11fc5b05c5f5f160a37126a33. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/PT1IK1900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea84455a04bd25b11803950c2516295e7e889da3ca1b14fe0baf4774a8cfa7b. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T13:10:36Z), 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/PT1IK1900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54459adfbcb3bd4cb536789c19ed6a24551685e7ccce24a9c038d529e091cc3c. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/PT1IK2100015.
Com Um Brilhozinho Nos Olhos (SG Gigante)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x256198de57e2954cf00ac6b3e9f21f67dddaf507b90ebbfa8e7cbd933aa1cb99. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/PT1IK2300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19dae3052aed21c96d918dd80091ecb0b740b6f904f597f7fd3c5f50617c4964. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/PT1IK2300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fed514ef823bc47c66fee50ecf6df7fac942f9c367ec618a12cba5053ec593e. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/PT1IK2300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf53de41612e722ae4af9678b664c6d44269cb9aaef6ff3d9c905e6e4d8abb2c. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/PT1IK2300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58eb9eb458a4bd5f595f6625f7bed88227fd0b1bc13f2b1d1e033caa2d5cec5e. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T12:32:15Z), 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/PT1IK2300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09f10f2a9da062d0b419b36a02a0b790ae096ac96e032638c040bc02126b793. 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/PT1IK2300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f1e454d894fe7f98cfa1c7061890f888eea479102d1a8d20d6e0069ad44b2f. 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/PT1IK2300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d4580044e54936b6588c9d93095248de7f94da76c65cb10b9980132c4811b2. 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/PT1IK2300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x256198de57e2954cf00ac6b3e9f21f67dddaf507b90ebbfa8e7cbd933aa1cb99. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/PT1IK2300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec372655ee06ddfdfc558231500f49d0c90e9b46edb0de898ccd05755f00425. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/PTBM12400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd5e829123aebc10d6508d52f55c739664a00d29471579b0129bfe87c08b49fd. 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/PTBM12400110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0844b7eb9c09a2332da6ac9e36c869874d39a5004ba6c78f4787154441a37832. 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/PTUM72100459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16361b43be57b5b2948807b51e2cce0201ed93f85f5d270aacb0aae5f1b6c771. 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/PT8KO2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0844b7eb9c09a2332da6ac9e36c869874d39a5004ba6c78f4787154441a37832. 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/PTUM72100459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712c8b3da8b0f810dfc9afb8842d57f4b3db4784f29fb10f09264e118920f27a. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/PT2DY2300117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd7c07941ee5dbf772f6095578864c59ca46bef4ba61c4a1acbe48a35666a94d. 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/PT3KV2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b1fb91c06edcf943087cbcb19a59b28d250a8899d61b3384a746bac61ad0bb. 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/QZNWS2174576.
Com Um Brilhozinho Nos Olhos - SG Gigante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53fbe94fa2dd1eeab396e6512317c2cd1198a2eb51b570ac3863ab1a67860136. Chain 2 (Bitcoin): anchored in block 957025 (2026-07-07T10:59:31Z), 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/PTUM72200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7d80ea86ef362859485c7dc6956772dbae4c7fb03f83b72c9d947572fbd302. 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/PTBM12400102.