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 0x8669f585bd35cbdc77d617cc36d4a34be91368bf7cde14dd084b0652b1f513cf. 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/09ce5c11-8bcc-45a4-a32a-79945ebeccab.json and https://artists.proofprofile.net/proofs/artist/09ce5c11-8bcc-45a4-a32a-79945ebeccab.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 0x504ebf163d0034d8433c95aa30ec941c2e5b8c2a31d619851a75c58d1b8df1a7. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEDL81000203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f85a1c7c9c0e781476cc06c91747b918eefa8084f20172574ef702c155c40ca. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DEL711010086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84cb68587b53bf74ac9bda451200294b2fb0a3ed3364612e67209b4a80709b07. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/DEKB72062963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4339186920b10862e24ea374b2a9fa6774b0dd08b993fa430b6d318cf5155313. 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/DEL711210144.
Cluburlaub (Compiled & Mixed By Laserkraft 3D)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2a878177dd6f46427d97d5a9fd6250e013796460a1f095398caf638ade55cc. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DEL711610041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc023753ebd3c9afa54db5992dc490b173ff298016b8c6a634d2600282431eb. 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/DEN061401486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f85a1c7c9c0e781476cc06c91747b918eefa8084f20172574ef702c155c40ca. 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/DEL711010086.
We Are Pretty Loud in Spring 2020 (by 120dB & IONIC Records)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d02d233dd14b5e3179ed05aed0d31e3f2057b0df33fd651de4bc5d2953e147. 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/DEKB71611939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f85a1c7c9c0e781476cc06c91747b918eefa8084f20172574ef702c155c40ca. 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/DEL711010086.