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 0x4a2e39ab2e02775f6812411a9e1ee45e438ab2e2957a081da7c8328d319d551f. 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/853a9cbb-5986-4e61-8804-37d5aea08d1c.json and https://artists.proofprofile.net/proofs/artist/853a9cbb-5986-4e61-8804-37d5aea08d1c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Quando Fevereiro Chegar (Uma Lírica de Fausto Nilo)
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 0x55153824ad92166c285c3e70acaf2ab8597329f9e31edf058e41c4ebd022a940. 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/BRP1A1000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b0ae6499e95a091078567e0fb25ea3519015be2225b75da5b0569b91b90b7bb. 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/BRP1A1000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c37c960bd8d55bf1895643177bfaa011720dfcbdbd081314a70a261922bc96d. 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/BRP1A1000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe861818a42974a80fc6e9ca5827d8f8b39eabfe8fdacfb8cd2f6c5afc60ba10. 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/BRP1A1000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50936dca991e8618b8e70984cc0994951ec56ec6071cc29c52754d3d4a955254. 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/BRP1A1000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f9ddb827097a1c2c3225f149cc5f40e20194972eb8138c8ed9f7a8eb0df1f4. 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/BRP1A1000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db5d193e3f9b802dde215116721d21d6fc996e01571269b1a0dd933573de005. 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/BRP1A1000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd31ac4d58c396dd7530c20b51bdaa34c6b67ee22e3d12716d39d5d0bed3f18. 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/BRP1A1000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1dd1613989e0a75958a1ecf48054aab59e53f8ebee3fd17a476b371baee354c. 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/BRP1A1000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2337445d8e6508269bfb4ad30c9ccded85885d37d0c0050bcd6666ecb0c5a01. 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/BRP1A1000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a572a559bda710ccd9e46c896bc4a545e839f7dd9f334109e4a22b51aae863a. 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/BRP1A1000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d54a55d692e1afdb3c5269f0ea7e74a0e652f48ffd5fe7a29b0eed78746d15f. 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/BRP1A1000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7905041e2909c8260314b49c9ae149c0d2b509d23092b22cb25a44f4afbff1e3. 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/BRP1A1200047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fbbc186628f6464ad2d539db8831d7ce7699671bf6cb88c1d85db25cd9f59ad. 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/BRP1A1200015.