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 0x9bcb6ad385f09791738291e86501715ebfd16106d938e4bb8083ec1af7f930c8. Chain 2 (Bitcoin): anchored in block 953795 (2026-06-15T13:44:27Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/df77bda2-0a7d-4ac5-ae48-953638455a46.json and https://artists.proofprofile.net/proofs/artist/df77bda2-0a7d-4ac5-ae48-953638455a46.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Alma das Andorinhas - João Paulo Lanini interpreta João Cabete
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 0x62ed9130401599756e4e94233863dee97ffe7194d3981dd8aaeeb50a0845187d. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/BRL301100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11499367749c3ad334d0dd7b4312871b6e4c4dbd879315b938fc9ef1ace4a2d6. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/BRL301100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f210cd1376ddb00a32f7c33c0b89314c86aa0224b03a9f166a968799795e065. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/BRL301100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd89e465a521f30627ef66ad0d419e89ac90f0a3b61dff20220eef711a8a91a. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:00:10Z), 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/BRL301100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ce31c03c356cf537f6d31083bf655cac9200537201ebc465a5572cd416bf10. 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/BRL301100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc945ef7e266a34d69d1cff212bc872a3eb4f8d0cea3327a4e1b59a3a81a8df. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:50:20Z), 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/BRL301100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1668fb5f6279090d09a6afed021d01e8d205b6141158bfd5acb9abb204c8f9. 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/BRL301100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7794e2c3cd77da49872c671fc650be725f1ae1072970a6fb17a337e0a75a53. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:42:57Z), 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/BRL301100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307b542f9aec46456ce5b738a8241c8d3e093b17b6c37029ef122a6cd02fbde5. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/BRL301100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7540fd837ee8199a9685ef41fba02471039cc09d7aff3cfcdb4ca01282e82ee4. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:42:49Z), 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/BK3JP2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc29f48e93a1cec75b7adc840ce61bcb57f94b3982d9a8b3793847913701cce5d. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/BK3JP2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500aaf0f10118553dc74e47d2d3ac906674a5ad821b8645407b87b26c6a0754d. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/BK3JP2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500aaf0f10118553dc74e47d2d3ac906674a5ad821b8645407b87b26c6a0754d. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/BK3JP2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e9d7147e51c6e99f0caf06db74432237b107aaabce366fcd60aad3099d0a9f. 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/BK3JP2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e9d7147e51c6e99f0caf06db74432237b107aaabce366fcd60aad3099d0a9f. 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/BK3JP2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5485468cff643adb83432f69afb6beceec8adc57b94cb1eb0741e553acbd61a5. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BK3JP2500003.