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 0x0b13e6573aa0024ba7ebb5293ac79c553b1a39df86fecdee794ded9be6374f14. 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/b691bbc2-9bde-40f1-9b88-f83254487598.json and https://artists.proofprofile.net/proofs/artist/b691bbc2-9bde-40f1-9b88-f83254487598.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 0x27996de106937a27e3a9b5754fe530f1784a82caa56dec3696cd9abed279ef45. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/DEZ901700438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3614a5c08e1fff9ad95ece96981bff15f031eb59bfc012d96841cd8d607fd456. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:26:26Z), 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/DEZ901801031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a2bcb0fa580b28675b2577fc215765c3158cefffcb7a7529135cfd5ea4a49f6. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DEZ902000287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86acf9b964f52aaabe533a09a3b08bfd073fdda1fecc6c1174d95ef2f5a881c9. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:15:19Z), 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/DEZ902000291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bbeb7e9a43af8b82154ad6c74ec4567e945ef68768fb31608ee7b6904f3f4ae. Chain 2 (Bitcoin): anchored in block 958677 (2026-07-19T05:47:23Z), 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/DEZ902000292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484114243999a5e5f31d10927e167959768ce14a39a5fb345ad95a53066a76b6. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/DEZ902000293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313404fa8e4f361b17dc80383fd85f8f4a1215f847278c5f4693c445f213a46f. 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/DEZ902000294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79aec358f5d76a2a6d4f7b613c7ea3647d30eaaa7b5cd2c0f9d10c170a66c62a. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:02:24Z), 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/DEZ902000441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba67759907a44fe9a32ae8e7f61d43c24defc36fc88dea9ea4ebe746a3ad651e. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/DEZ902000330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd1e0773a8c4fb7eae28ab2d49a2b22dd375347d6bc3f29202b715c0a1741e5. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/DEZ902000333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62cdb8013998d5121456e25b259ef7f83686709de36f705621ca5761157fee1. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DEZ902000337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521940ec8802977aa070d6cb32022aebf279e16687335b26a23d6874d7b39ec9. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DGA072387350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x910401acd01e701da54ef8b904a4850bd92b098dddada898b86223dd90c8ecb8. 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/DEQ022383475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ef1b5aed8d3a5c785590d0d53e32575239c3985da1c525b3271475eed182f7. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DEQ022383476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840368a79179611c84c6dba7e0c52b1ef580e4d52c9abf9c2d0b82c697ba46a5. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:30:00Z), 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/DEQ022383535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x041d0cacf91481d314664221e43dd0e39d5025462546c94ee2e4afcf3df2095c. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DEQ022383470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65fb2b10c323d0e4d877a00e4f7007c85fae77dc4643a7b53fef78950a02502. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/DEQ022383465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997bf4b7ee5d05fef1bcdeee48883677adf0de320facf532ad149d4c21ca5402. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:34:11Z), 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/DEQ022383473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6dfb44a6512b64c9422f13f7cac8a95bf4c91a571a078c977c399b38c16b42. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/DEQ022383477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039133410f53807036feadbb4e4244fb65266cae8699cdd19aa271590018680a. 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/DEQ022383471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4dd7fac0c26749fc811a57ec81ebb45423dffacc931dedff993a079f228057f. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/DEQ022383469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86cbab6d4cc3d32c7aba3eb762573e47e07fbfb9bc8bee72eff333ac6fffe9d4. 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/DEQ022383478.