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 0xe8afbb22331f70f19182aca44c8d5b7aabfcfbd3fb52b49cdd85cde1884f5785. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3d7fee2d-eb1a-4df4-8d7e-59305cc1d0a4.json and https://artists.proofprofile.net/proofs/artist/3d7fee2d-eb1a-4df4-8d7e-59305cc1d0a4.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 0x4ed34914f2485f73c65b5c9f0e37d892eb9202e9bd47547c39dbca63a7dcd992. 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/TCAEA1815143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995210ad51283055b7c2f76307663689148ee7cf726ec515faebc3eed3cf7ce5. 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/TCAEA1815162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c9eef1269f5002262e263698b18ab501ff4d29bb1032e2d614843d51c0d2a2. 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/TCAEA1815179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c8acb0b75f28f9a04a001698bdadee458748cb1a4e0b1ade8778fcef97c0dd6. 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/TCADO1840419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d80e560fbd795e855916c149dc41f5b379ace51e250d4f916d067f53950edb4. 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/TCACF1575933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd92218f641cfba27d8f949194a4d590edf83ea02b9707aab9727955a100cff9. 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/TCAEA1819059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c48373245d1b038b106bc4b10b874db0a1ac57008dc648b99cd6246f4f70dc5. 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/TCAEA1819071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23acebb3314208dbabd838d6ae44528dfe21c8daf866858b75a52b9910eaf4db. 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/TCACE1569339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581fae78d5c1b21c56804ab06e7c01f046cae2c906c522548c6ab5f2e8240ece. 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/TCAEA1819086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eeb4a8e1e1ab0ea5d363602187b6fd459f2deda56b9a8509f6859bea3147992. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCADW1837145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4478bb8e5d3e62e1aedb73bc6ac78b166ad53c1e40992708f450b6a578f1c14. 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/TCADW1840848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5750135dd2824aa84635b7fbcebbfd201f3d143d2a46c0c72db98253b0160749. 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/TCABF1231018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373d1ae5e166f6b06ee13555564d900d2f2ba3da320b570ad8ac80971d69496d. 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/TCABF1230996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad193ae0255e705910f4162fc03f15084e3cf8bd99ad7f4c9081b2d38ba6b10. 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/TCABW1466033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39f93a67f58949ee8ee21f5d3ba85a7cc4316059b82496ab9e707261070bb1d. 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/TCABW1466034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe50bad75e0088971f4c57738ee6b4121530c5b5319530c726bd96407d6c140. 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/TCABF1231017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184c65d6dbaf3c12847794d9f95d39e6e0c26dd22769636001c92934d186f536. 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/TCAEA1825017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a650802caa659aff7e56182b84a5f6e3daed8b7cbab015599cd34adfd41c71. 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/TCAEA1825025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7551b19b4d8525501616a2c0b98411df2f044ed6b10de95731207f4cd7c29659. 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/TCACK1579388.