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 0x418e0886a2c8f0c1d9be6cb587b6230359172b03f02a4cd3afcbeca0e8fbe83c. 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/777d19fa-604d-43be-ac8f-085367a10acf.json and https://artists.proofprofile.net/proofs/artist/777d19fa-604d-43be-ac8f-085367a10acf.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 0x7426fd6f15cc86316ded2cefccba09b54ca3510bea3c2cb76da722900ffed581. 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/BR0396262422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5708edfdac11a378a03f9fad33ce6d750db2d3699f02d0285a430349219c86b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BR0396262499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc311d183acdf5540b05ce0c9c8a2a826b2f5c1ddd1fb310ed56f0b454744b070. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BR0396262477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf14b24014075f1b4586ac3c53c72094dc45750c73905594cbb35836d2b23e7ed. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BR0396262591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1e243484a0e8dccffb149edaa8432a7528b585fc270c1921e81dbc31839a14. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BR0396262433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec12804f75e4ad48ac792322f3b48d55186b6b464db8b7873d2275ea0f0233ce. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BR0396262557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c63124eb88adaeff119fecf533bdde7619f0606d2c1e17c736a608436b422b. 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/BR0396262455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478a7bb0c3e60bf8344c5b3bdf14b8a1af3cf5cf9afdfd8f7584ab6bd33fdb5b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BR0396262579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd894386dcdcb19dde3125024cb879d8cb811cc319c6b18332e8af34e3ebb4e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BR0396262488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7af584b582e07f3b8d0cf21161f70599c93138142385c2ea6f5ec01e7cd0a28. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BR0399452802.
Cypher Conexão Rap Brasil: Estilingada 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28af10dd05a96ae9ed3439ea3429b5cebaccaa6a572644b0bc8235db57b7901f. 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/BRJWH2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88bd129f3495c24a406ebb7c14835b1166c439092ef15ee22b8a35cc4ccc9790. 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/BRJWH2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0382d407015cc656cb7b7d0cd92dc23bf4f5d98b34efb0344c6f31d0dcc84fb1. 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/BXNT62207996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580776490ab09fd786e3f65285209620cd96041e13a284405d4cc927b0d62dfa. 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/BRM7D0400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x385afd84aff43c5b0317bf93d3dc10acb101baed0c6b7a7f6205e4326b0349f2. 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/BRM7D0400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca9211dd28c36c2502f049a78224d652dd1fac50c8cfa8e5c1456e846cd34f5d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BRSKY0501601.