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 0x89b1e33e9373474598f80db1bb264ed81935db04ab2dcc17fdf4df50761ab7d2. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c9c82c48-b846-4d69-81e5-582c3861a60d.json and https://artists.proofprofile.net/proofs/artist/c9c82c48-b846-4d69-81e5-582c3861a60d.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 0xfb206d578c85073a650b5a4ae67bf596bde6eb7a42b8ac6cfcc219d1ee3208a4. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZ5AB2494586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b5bc14d9d962e01413f5f13457ee9a006447323f486d993cd6a6b0a6600d51. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:23:56Z), 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/QZ5AB2494589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34025e857d5e70a8f7ba7bf02b8164bf6a3aebbdc18e84c1ac5829179e2394d. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-17T03:04:14Z), 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/QZ5AB2494590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed7929ea348a09aa25d2e015ee1b961136580b189438b9c02420df1a1846a50. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZ5AB2494587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1341f430dc9da925f221b251b509078e37eb80f28f72ac1aa8efc8900a8a2334. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:50:21Z), 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/QZ5AB2494591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a18ccb8b3182fa3a552d550e791a067fc8420515c8ee233854e6c7ce2ce73d. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:19:05Z), 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/QZ5AB2494592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a7c0c2fb5bd828672f3218f0a57fd44228ab13d7c3b90101af0441bbf6056e3. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:02:04Z), 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/QZ5AB2494593.
O Furacão da Bahia (No Batidão Sertanejo)
O Furacão da Bahia - Ao Vivo em Jussara-Ba, Vol. 14
Cabaré do Sertão - O Bregueiro Nordestino, Vol. 22
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c086dbe97c7c58aa16af1b4409dcd5f151b2fcfae1d188175a00f7d13a1bfc5. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZGLS2439159.