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 0xd54cce0a1a84dd44455f43aeac839a1d161c0c12c2e8101b0da6f1a6b174ce5a. 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/e876da5a-4ae4-40f4-b0a8-351f43eb21bc.json and https://artists.proofprofile.net/proofs/artist/e876da5a-4ae4-40f4-b0a8-351f43eb21bc.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 0x78f8ec91b5c449f827296cbc08f0554df967e36a454989d0076ba78fa993b8db. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/QZNJX2389809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eae387976d5390524562540a8cfa891a98d4bb9e935576ddaa878d56b776b2d. 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/QZNJW2402820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcceb519f5487a395a8694424c6e30d2559cbe735d60a30de6014d35aa6b1d053. 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/QZNJV2461114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87a64fb12ac9751206be69357c7a69390b10ae10ab90a5cbcbe875c4e8a0268. 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/QZNJV2461115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc58988def6c6388aa255fd50d34b0d3344de0dac75778687c7decb9fb406548. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZNJV2461116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed64152c1ec09b132886b752812cb22c7495988030bf4081008ce348b891d04b. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QZNJV2461117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb20d5460cee9b035c6e4e440d935e187247ee0f28b9798fe0ff2b747337b7f70. 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/QZNJV2461118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a328f6b1315d38840d3a90391010dbf460d666d6af48a097677daae2c5a1ffa. 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/QZNJV2458114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa059b6aa2a87547b7aff834a2bca11535f04a2e89aa36e09bb46f3ac3ffb79. 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/QZNJV2458126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0f96837aafff6f00be3953586e2feeb641f551c1f7b067a348823df8df461a. 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/GXD7G2404356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83674053c8a2518448a6b64bae0edc0d4271ed4113bc1dfe9c226978547ac7b. 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/BCIH82101488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6fcaad7ac3225756f144b7ffa796999e4eeeba171d47b03085fa5aa04681c20. 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/BCIH82101491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea37a2537e2b45b48d66c443114b22878217c1a6bb7208e04b160170f14bf98b. 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/BCIH82101486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c903114c8eac43b6f3be8cf7bd421e04e7b8336c594c44f820f6bc615cd54e9. 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/BCIH82101489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf791b6e091bdcef8bf8050a2b6c8edcbc66fe62ba7fa1be8c79b7ba4ff92d40d. 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/BCIH82101500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816316b3755cf56b0a514c874c9dd0e444eb15ec64274900e40c9df43b8f4d17. 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/BCIH82101401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66d712bb14c447f8b406780800222ae3802156343189afb02f33d25c83f4de9. 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/BCIH82101390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c9c067053e996b63bbf62aa13425d0ae2a42cca0dab686c4ce2af16176625e. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/BCIH82101389.
Beat Agressivo Aqui Dentro do Meu Quarto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc6d61521e37c1a132460cef2166303139208427102deca42cee2fd465410f2. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/QZNJW2391163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6264d28e77a12c30e5bd48793799cc79f2404b68af741b2646fd8a4ace024366. 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/QZNJW2362015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43702a61497ffb9a8c827caaf43316cfd5479df491858b6bdb4ccb6e15cecbf3. 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/QZNJV2381044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00acb98d3c4a4299aed30e30c36b2c5628d74cb9c94e4512ef022124287688b. 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/QZNJW2406935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25106d603ffc21b6a3974ba3e608eeee3b1d6d46c01bf40c87369cbe89fa6a57. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/QZNJW2402803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a0bfa30e14e3bf494b66217535c0404272b3ec4920f57c4404286d16614194f. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QZNJW2402811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420b8120e896b187bfb4a42fa0f5e66aa8a393dae1bb8dd98463973a4e2a3f55. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/US7VG2583992.