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 0x57ed5956d9597d42d5fe166930969b3b6c67380368a6d6c4e7698d754c09b59f. 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/706c1a4b-7a6f-4075-bc9a-11db99e0a382.json and https://artists.proofprofile.net/proofs/artist/706c1a4b-7a6f-4075-bc9a-11db99e0a382.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 0x450ad15d841bda24be669ebded450b79baa3aed613e3c0ecd45d0d35948715d1. 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/USWB12302317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x629c8ae6dac95e7fa17f4b2b4413d1cca1bd1a5c525571b230e5d882673aecdb. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USWB12205014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95bdc20fe465575a8802ce137ada8a6c3df4e2c3b29ec6986298b74f1c83f1bb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USWB12401603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5af22ed6aacfe295a29e04e8ad670f647298a7c4187514995ef4aa6dc906d5da. 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/USWB12401606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee0d5873f332415e8822ad6ddb91fe7734f457dd409f0ab03bf68f4a56c2412. 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/USWB12400160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7cddf5b836ba752a87145cb3cfadb48f07c823d0bffdbf5bd210f41f1dcfbd0. 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/USWB12400609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3709dea9e77cef118321f8a87a64e9b2170a5acfd9800bb143ce51b7a7229ac. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USWB12400265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5186d0b7cc9d5fc9834bca7ab4478b6e2495afa49e83635c8f46a901d36fcce. 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/USWB12400610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe649a7c84b083d36b191116fc84f285b71c4f3c615eb74a69bc0940c79585517. 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/USWB12401608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6b81b516404722fb737d552ea8fd448ec0d2ecd87e65bbcc52099bcc218150. 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/USWB12401604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778cfbe6a8c72c7d39926c0a61280cfbb970ef784924e8bbad3dccb454fc1823. 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/USWB12401605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe736465ad15150a71f4cd7a82f1292c890974eae3cff6666e7f547ebd59d3b63. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USWB12306995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4446ad2fa742dd42738dcdaef1dfba43a85074a44198662412fb55d97afe0e74. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USWB12401607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286657ff5a97b603899ae396b9ae85f81e156785c28716a8e5517f8e57118312. 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/USWB12306878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e94edbe607f33b34c2818cf971abd157e7687f29631caba69d08e1ce270c9cb. 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/USWB12307007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f5b0ae06a1fc7c7d13967bd7999eb3735fd782aee53c7d6871290742d35312. 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/USWB12303739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808d366c0e135167771a7a56f0c2a642030b54fcd7972ab8f813017649fb10c1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USWB12303740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d3fc37f62127c78b0d01a491d6f243b577c8d7302ac13274e05c4410c09882. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USWB12303731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x450ad15d841bda24be669ebded450b79baa3aed613e3c0ecd45d0d35948715d1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USWB12302317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0792891126e511e8fb30d0cf736d60790d6149503bf7c84932934944c7255634. 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/USWB12207412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488243ccdb5c77d0113284cd8c0053faed51df35ec8456de7217d35a8a810512. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USWB12207413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee0d5873f332415e8822ad6ddb91fe7734f457dd409f0ab03bf68f4a56c2412. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USWB12400160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3709dea9e77cef118321f8a87a64e9b2170a5acfd9800bb143ce51b7a7229ac. 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/USWB12400265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5186d0b7cc9d5fc9834bca7ab4478b6e2495afa49e83635c8f46a901d36fcce. 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/USWB12400610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e94edbe607f33b34c2818cf971abd157e7687f29631caba69d08e1ce270c9cb. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USWB12307007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286657ff5a97b603899ae396b9ae85f81e156785c28716a8e5517f8e57118312. 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/USWB12306878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286657ff5a97b603899ae396b9ae85f81e156785c28716a8e5517f8e57118312. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USWB12306878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f5b0ae06a1fc7c7d13967bd7999eb3735fd782aee53c7d6871290742d35312. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USWB12303739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d3fc37f62127c78b0d01a491d6f243b577c8d7302ac13274e05c4410c09882. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USWB12303731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d70b0c59701ba82bbf6568e80c4f78f8f8c858e100ce84d61e69eb33fddb2f. 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/USWB12303733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc633fa08e4a2eee3df54cf7659a41144b78b899430d1d0b6bdec547b26cd36cb. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USWB12303734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0792891126e511e8fb30d0cf736d60790d6149503bf7c84932934944c7255634. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USWB12207412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488243ccdb5c77d0113284cd8c0053faed51df35ec8456de7217d35a8a810512. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USWB12207413.