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 0xf67c07dad5a1b83722f639cbec35bf6c03262244ad23b49a3068fd4960d9def3. Chain 2 (Bitcoin): anchored in block 953645 (2026-06-14T14:31:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4130c7ec-a278-4196-b19b-c3c69e88a2dd.json and https://artists.proofprofile.net/proofs/artist/4130c7ec-a278-4196-b19b-c3c69e88a2dd.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 0xb77b2795a081b4649aa425d59d790c605e49232e6908f83e9d0ea12fb687e3bd. 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/BRAGL2100002.
Ô garoou / O minhocão balança mas não cai
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5fe07423e454470963009df2416f5c5945abb6c5a087924da97680d64f5329. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/BRAGL2100003.
Camisola da vovó / Esse ano o Agora Vai tá diferente
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf8cee42e21fad2a58dac301da2790828a691f581f77f3480dd6044aa48e8df8. 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/BRAGL2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9bfff7e12d580c4ca14d050785556eb0e68c845f1a6b13c0c5f953d7d6bdd3. 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/BRAGL2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0083fdf3750cfab96b8e9a99b0a3f361461dffba4135cf80d7ab020dcfbe52. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:15:04Z), 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/BRAGL2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f29027cd5070feaee7217c9a9d8c6088dfc329a5393a5c27523d7769be6075d. 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/BRAGL2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x520e8663a79ecb54aad1990753b6afdc605b117347ca531439fdb61a8613900d. 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/BRAGL2100011.