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 0x000db33b23a69f63403db2f46a0db217a45ae91ca4317c7e2774a991cf333903. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/37d3bf42-424d-4eb6-9301-29e9dc343449.json and https://artists.proofprofile.net/proofs/artist/37d3bf42-424d-4eb6-9301-29e9dc343449.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 0xbed826937afdc332abbf81c5242a52da78adb0c42a694e7b63af06bbd5331598. 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/QZNJV2337758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb44c70e3b99e137d22b00f47248c83ee6c60be986115d78945496e35cfadab. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZMZ92441913.
A História Continua ( ao Vivo em Castro Alves)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9338b9698bd34659462915c71e7e65c4f4fdb5ecde07d8e07ba22d4847d4e7a3. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZNJZ2476230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d43e8a0433f79c469571cf8b28583ec9f2dcbadfb38f186e085eae6da74e4d. 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/QZNJZ2476231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac1bcf57332d47b90e0d5b7b55dfa95f8e612bc04d79da04196b657c5e3c1cfd. 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/QZNJZ2476232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e20d2d9f978036adba82fe3c7afa689f93480e2a7808f36958cd73e31b752db. 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/QZNJZ2476233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c9e71869076db6bf3d484f80c9da3c20382e6f3e060171930283d290e5f174. 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/QZNJZ2476234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889f2377ebed97a4fb4df20d9067c02e4d366ffbd3e17aa7318354e0c26e232a. 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/QZNJZ2476235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f303bd27754b9087d64351710241b231bf54ea44418b4553b1201f9096e0139. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZNJZ2476236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954734d87ecc211b3445b9c71087db1fb4a4fa5ab31542afa072a016f6e1d161. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/QZNJZ2476237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9252ef80a98d38237ec4f4def2442265d462ba99975c8c0d7f6a0b3c4b00e02d. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZNJZ2476238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d205e54c4c9886adf1ce4210f3d90afd0545bcba7d02b3ec6dbee5d9e133cb9. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZNJZ2476239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd02116b563bacdbce084ad05ce5f7e8c3ee687b6db38697ccaf35588382056. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZNJZ2476240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c490e58918cd5c0354434d888410607b7efb3d33cb738c3cf6ed0a02f5a315. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZNJZ2476241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb686d6ea60cbcc93de5dd485fadd8dc9cd83d816dc0df0fd8850b10d09e1deb. 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/QZNJZ2476242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x657aa1e2c1007d77203fed8f857db6a0c07cb789ef40f0354768252bd83729b7. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/QZNJZ2476243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e30ca9f7240afbff6ff75b456cecbd11484e5ba53a37029b8f29823dfc73af. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/QZNJZ2476244.
Isaque Gomes (Ao Vivo na Flicg - Capim Grosso)