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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477e75e83903bf185d7a7596d595167b7ee0eab74d9be9b1695335bcd01c18a1. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/86e13b89-6cb6-42e2-a318-95d9e42a93b1.json and https://artists.proofprofile.net/proofs/artist/86e13b89-6cb6-42e2-a318-95d9e42a93b1.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf73e825312101173c56992f170c9915aa53f3e86eb3c43da39687c4831b8a88a. 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/NLCK41092709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0191ac295ad668de75c706350b5b99a8505a132264b81619a63b3c01146f1ead. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/NLCK41096019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf266fe9e45d70698ac7c9c259684f19ee256788f8c486ab345e6b408af7674bc. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/NLCK41094265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4994055c58719107bb2e17b126ebca19a926bb7d24ace1c4796c32c5da3679cf. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/NLCK41098053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae8777323436a16d575686278954fb8e81cc5dee073d5fc96345ef0f44d891c. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/NLCK41094264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4118cfce07ace55b4429308a778ab35262f948788b9ff46641a01e649c98ba12. 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/NLCK41098054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9a39990fcd23614626e104410f653c05d028920cf5fa683ae992effc1daf4b. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/NLCK42210503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f8cd10f74317c90f8d22c0d3ab4c6dfc3ac9c1d3b2f766b02734a3de665259c. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/NLCK41096018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x352f3358b6cfa16111d2f7990641c40a13166c7c475daea64fa8faadcf6900b3. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/NLCK41092710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ddcc96a89f5aad6f5d03df3643c3e0ed23544d5765f8dcf43928599834243d. 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/NLCK42210504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4941c1ba0c1cdc45d3fb4ed32ccd40925ae3c0777294ccd9b4505c37e63592. 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/GBKQU2451819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ad1457e9e6394fa62e2caf4768b5c012e00edffdd51928b18b4625c7dd5204. 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/GBKQU2370450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1a65ac6cf1f5667bd80912d7e34ae0c995c6c5ed7b9e8da6aad503a1ff5652. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/GBKQU2370451.
Cheated - Afghan Headspin & Pluvio Remix
Cheated (Afghan Headspin & Pluvio Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f1fc9b32ebb758bc9d40215b286de6543de958d34323cd5bfff540fd6e02044. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/GBWUL2249023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf485c48295574fe009ed2cd9e24ca6abd913a9b6535b553b45f198f33c43351d. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/GB8KE2161845.