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 0x4531b24bcae15df54894637024578b4479183efdf93bbd722b0e08fa93bcb9ff. Chain 2 (Bitcoin): anchored in block 953717 (2026-06-15T01:05:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/87cec950-bf05-484f-9ec3-3209d52ce5e7.json and https://artists.proofprofile.net/proofs/artist/87cec950-bf05-484f-9ec3-3209d52ce5e7.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 0x374590c692b5895fb20e03095e0c031e90b931479275701597341a02e3b08003. 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/BXDWE2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f300fe56ef0e2917146740a9b0c81efadbceda7621f6e012c7c256cda696ff. 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/BXDWE2100028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc070709645476415e2f1bc5a58aa7a5ae1ae3b154bf9968cfb17141573f05d97. 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/BXDWE2100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf5c4540d796c9951d7687cefe14db2674d32ae59892325594388e52a6e768bd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BXDWE2100035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x200e66b90af46a73a28bf3522001fcbb871064cd925acba19a4e90bb5a0b7228. 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/BXDWE2100036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71433e727a43919201c7703f26835f661e1ab6a31344b2a34d33745014f36819. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/BXDWE2100027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f117f08d216acc1e7bea0f9fb357f1734f3864b0506c044cbfb8231f2b642b. 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/BXDWE2100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3cbcfd3905bc1f01400e951a02c3165b3fd5ee89998baa957377c9ec896a8c. 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/BXDWE2100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729919348beb068da87d767e2a7e073141e9c773567f036e60a5da886c10c8a2. 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/USCGH1746933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bba010255c4ebd971d2a417cc6359cad0ac6f45c62be462bba2639e45bd3a57. 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/USCGH1746934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa016836ee2a4d883bee5fd88eb9eb9ee2f71098e9a575da64643cf4094158003. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USCGH1746935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd898eea7badcc7423e10bf3201844fb18e0fa6e0fd720eb1503914dc9bc721d4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USCGH1746936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e8f27502af857c5b6eb2d468df1c1790055bd88b235e6319dda5eb9a80fa7f. 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/USCGH1746943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d64ddb013d55308b71dcad03baa0ac12ab6ea261d020b84c2f6c46aa2a65b3. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/USCGH1746938.
Nossos Versos (Versão Acústica) [Ao Vivo]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd364714f6362b151d79ca1882c363ba810ef550b5ac2b746b3015361b2bf8141. 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/BXDWE2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374590c692b5895fb20e03095e0c031e90b931479275701597341a02e3b08003. 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/BXDWE2100008.