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 0x9ff8cfd9c82a516614404acf8e2a38c0453935224e44bdf5fbe2841044c04508. 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/30fe0e6f-a0dc-4a2e-8373-d584afb3a854.json and https://artists.proofprofile.net/proofs/artist/30fe0e6f-a0dc-4a2e-8373-d584afb3a854.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Janaynna - Se Liga! - Ao Vivo em Campo Grande / MS
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 0x5200b0f10cc1ccdc8f258ea448e3ad00d8c4a198ddb81bb46f9c87e728222e2f. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/BRSME0900929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792387f2715159a369177c5ede559238ebf59a2f4a8282b238c40865a2754538. 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/BRSME0900931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76f7005e3cf7a794f1a82022538efcf0364af5abb51f9513feec121fc081f18. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/BRSME0900932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c3c367ea3897ff4913fa92c94a25dce34214f9020d342037d56640e034eb0a. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/BRSME0900934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08bb5c27d9d57342f2231cbb735f8677ffd48705269f9dc89adbae60652ad077. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/BR8JT1700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d896a49924996252dd1e3c0680e1be1e3f2e33f6cef3309395159cde206afd. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/BXA8E1800240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95341dd232b6112470bfe55a03628e67c003f150a13b5b11ee0bab0c7a921ef8. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/BRK1I1500011.
Um barzinho, um violão sertanejo (Ao vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ecf9cfae6919861386dfb3dd6dd7d3d2ffef422adb3fcf9543a21cc17c0cba. 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/BRSME0900753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ecf9cfae6919861386dfb3dd6dd7d3d2ffef422adb3fcf9543a21cc17c0cba. 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/BRSME0900753.