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 0xdcf7f224ea6c1eb38c317ea4b12ddde1dae53438dd967331bc722db93a1fedd3. 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/8821024b-331c-47fc-9c80-06a9bfb158bc.json and https://artists.proofprofile.net/proofs/artist/8821024b-331c-47fc-9c80-06a9bfb158bc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ta Carimbado o Nome do Cyclone nas Favelas 6.0
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 0xe7f50288ffdb602089670d49fbb8f70f3ffa003160062db95e5d6e9ad816aa6e. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/BKTTW2200043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2dabe72608ed886995c5498a7bb29e14ebf6b81e88de693fc76e39720824903. 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/BC7V52300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2611747693da31b79bdd961ab40fdd7bf315ab84f3cb14620ad16a7ead113667. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/BC7V52300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe031c44442fee124751db93aa68081c51039a869a5af7186c816835c2cf56222. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/QZNJW2409130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c553e968efdb3ee4c5c5d12fb7582688ac873edda7455b99e3094f20e35ad43. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNJW2409133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c70c48d959cfb9fe10fc470cdd4ba66a32fd3f7f8b89107f0eb8293ca6acb68. 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/QZNJV2425814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6acd5dbc84176cc37815c54765c85a31fd65c923d03c6c8deee168190687e352. 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/QZTVM2335739.
Só Imaginando (feat. Gugu Ofc, Dj Ronaldo & Mc Jajau)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0d7dc5e1354e41a1c89f0a1683075359c9fc3c61eee5aee772ae45234f9a14. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/BKGJS2300133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6d71fa251fef13256eb7099c32736592139edd11e16202bd3f07e3799f662b. 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/QZNJY2335810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f389237d2893a3c191b6c68750beb3be83ceacfce0094ba520f74d8dc31e14f. 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/QZEQU2202933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2733d5203a0540e33130ea44cde64d907629e9fbffebe444b061b4b3f17e1592. 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/BKGJS2300155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0560f6cb7589d7cc8755384eaba4ecb43cc632b5687aa086ab0022ef1d523560. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/BKGJS2300179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb62d8c9b55230613339cc867cd10fc247834359412abf4263b7f6d408d8bae87. 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/QZGLM2589611.