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 0xf12ebd6d4bc5594e33b3256b484e010ceb7d1910dbe7985a6665b285752da496. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2d53db48-0552-4a06-aad1-afd7a7d0f4db.json and https://artists.proofprofile.net/proofs/artist/2d53db48-0552-4a06-aad1-afd7a7d0f4db.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 0xda9d0318138c657e33382b398b1c780f592145a039b2552894ccd2c04237d382. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/BCXC42300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2921f020cf7c0929dff94d6a4d9b017e46621e14f7b6898d39d01cc5fec9ccf. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BCXC42300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43f72c17e7cef210f9242579ab0db68f320a211b9ddbb56a31d82b01f921424. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/BCXC42300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4162f2bc7e6e764bfafbbe71d6e38e15327d92f941ed2b02ff6d89bf2e7a61. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/QZMZ92299953.
Ritual (Versão Garoto Triste do Verão) [Acústico]
Músicas Simples Sobre Amor Que Fiz na Quarentena
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a9ff4bd4d76ada2db7b142d92881a90f78ff4d3def03243991486d5f198c8e8. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/QZ5AB1614832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f9b222c82eed475c891d9ce8b9e339f960c2e7b6eb94fdf03b0e6aff736be9. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/BCXC42400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x470f962e9d32fe9e1f6f2ed47cbcecd3b0164bf339bc9314db9dfb637773298a. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/BCXC42400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309b43f8a8b6ab536e7fd0de6d85956811c1cc675f47f30f5cf6e22824f69d30. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/AEA3A2259772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487397c8c15875f07a2838e2089f39bc84913a8e9098063daccf7f43545afdaf. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/BCXC42400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610d0635137f41cb75f11894ae3b85764930e1bf47934f70ee5f9f7a6c02ce47. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/AEA3A2223626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f9b222c82eed475c891d9ce8b9e339f960c2e7b6eb94fdf03b0e6aff736be9. 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/BCXC42400003.