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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27823f2f3efccc669c34817e064a93916afd6f510ac028d56e486f5fb652b75. 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/b8ca527d-7d89-452b-8c50-cb995c93cd17.json and https://artists.proofprofile.net/proofs/artist/b8ca527d-7d89-452b-8c50-cb995c93cd17.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc25535688fe15976239ec3e68fd40f76519389853eb119544f8b54473042007c. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/BRBOP2300045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x859138c9bfdec95d01b58930dd76ce5e478c3f80de323452432743f20bdd8be7. Chain 2 (Bitcoin): anchored in block 958602 (2026-07-18T19:28:16Z), 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/BRBOP2300046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a2520a2e52bdcb59637e3aebe8e2d3796fab2c85a1efb5bd9ddbec8c70e67c. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/BRBOP0400420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba333945bd137a4ee4f2d0fc52c52a3694e531fa9b18f67ed3159eea7a8683bc. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/BRBOP0400421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5af63067038b3aab42cfd516611aa3f8e37eaa8f42c9a67297a779432f1fb6f6. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/BRBOP0400423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b209341bd8d32ff1d8335768ecaa5c5294e7caaf8999e9c5067b0be1a556322. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:06:44Z), 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/BRBOP0400425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffda4163e61805179cde16bc044995fbbc51d3a4b4ab206d15da0ed22361755f. Chain 2 (Bitcoin): anchored in block 957730 (2026-07-12T16:41:26Z), 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/BRBOP0400426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e9723db5bef7846255a4ca121634a6089afce183e759d735e4cf01499702df. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BRBOP0400427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ba5f84e40583b966ffc4666ea7c0cfae7b725c95b4588be1f3b342b98e3950. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/BRBOP0400430.
Cristo, Bom Mestre / Compre o Teu Querer / As Mãos do Oleiro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6949ccba6e1544194947672dd9a062f131c26f887e74a403bef448ea7cc8d8d. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/BRBOP0400432.
Nunca Mais Serei o Mesmo / Nome Maior Não Há / Não Há Palavras (Reprise) / Ao Contemplar a Rude Cruz (Reprise)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e84c7c9ecc4352d465da9f308c0161ba5d78f7dd7b7acd977f409efc939f3d. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/BRBOP0400433.