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 0xdb2c8dfbb1b488560bf6ca9838761e7ae8702489ab5c2de1d87453eb0fd898ac. 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/91fdb52a-3745-402f-8e73-122b72e5bed2.json and https://artists.proofprofile.net/proofs/artist/91fdb52a-3745-402f-8e73-122b72e5bed2.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 0x71d4b2fe9fb178b40847886c756aa2bb3acedfa83322f1d19e38762c577dc6b7. 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/NL3TA2433702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb83ac0647c456c2ce3a64cd01341c56ab04f8952aaaa608c6c21f335955586a. 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/ATR981300431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e5f163b31a69fc7a463d6432ce05587a41d9ea4ae6122d5636a7308f583041. 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/GBKQU2352184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2913bc4b9961e1c0769bc47955c081cdd79e163ceb2da9b1b5484ba363ed045. 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/NL3TA2327402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20604beabc04230ab6df974d2d66f6c75168f556758e595c2f9272c3fb2f98be. 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/BEB682300120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e79d2f75d139ea90a4c51bd1eeca7164dbaab2cc6217c02442cc80463c3e452. 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/GBKQU2307682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62dedcd823dab238c153e93321eaff6f5e059bd070717f81de13c3173d2fc967. 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/GBLV62200197.
Raise The Sails (Official Hardcruise Anthem 2022)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81b1acd17354f67f59831e09c282e5f3e4078dd04723164342d8b585f77dc86. 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/GBLV62137463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd7d01daf67569810d92b135a6192fb93bae87cbae4bff65415dc183ed43b48. 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/GBLV62133216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9a7a8d04ba7cb7a344760204d2d005ff61670ddd079ca996b087f68e3694c3. 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/GBKQU2186546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3920a0130519ae4ebf286b39d9c695dcb03349366574643ecd8341ad206d51c9. 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/NL3TA2100044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b01ade8dedd3935a725986af1497acd42c01473ff53eecf87f89131a7d992ff. 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/BEB682100152.
Bass in Your Face - 2021 Extended Kick Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d1addedbb73dc1e5278cf95ae1d66b7c1352c5f4b96bc7bffcf746b9fdc59e. 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/GBKQU2121805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7bcd31887cc5413afff695dfae60f70cb195ba48a309ac4d52c0fd79cd6a9fa. 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/GBKQU2121806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb6f525c1064e459e896530fabf4d82eb494a05c0fda3aedfd82a2f67495638. 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/NL3TA2000029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc162ef723ad901ea464b2d4d1db0eb3640bf67b64d7ff8ac6fa83b72eba050c. 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/GBKQU2094133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698b2d3aad319fcca47f765b22cbdc9ad65c6cc924b226575c0c8a537223b5a8. 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/GBKQU2052780.