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 0x9eaa2bcd781e3bdc18fad171f907a5b5e1a5b5a525e4a6bf09e7abf2354e4b93. 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/04a9eb03-d50c-46f6-bd4f-bb5475ee018e.json and https://artists.proofprofile.net/proofs/artist/04a9eb03-d50c-46f6-bd4f-bb5475ee018e.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 0xaa59f521db37a2aa9d10106b0cd139d8ba724f7a95446d518861473476acc1e8. 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/QZNWX2401541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a76fd3954bb18a6645601448579c4975a21626831cdc0ed6cf90c227d0956a0. 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/QZHNA2427316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x034c3be51df23cfec8ef64aae480b5a1ed1080af82f7cccbdcfdb92a0879a289. 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/QZHNA2427317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7daefd307a90a0aa78c4acc3db965b7710eba8f8f9147da8b49e08e9c8b8d40c. 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/QZES82470498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b432cc60569779b0f4bba1752268008cef7076c732afa46e0662ea246a6923c. 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/QZWFQ2378042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993a56f76520bd1f996a43af765e560f70238f6d081ffa55d6293d88f319e045. 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/QZWFL2312310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08176cd83403c744850a2eba342d35ea5b09ab2ca5626470a95dee396364cf3d. 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/QZWFJ2303941.
From The Music Within You / Keeping It Simple
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebb8134f879b3a436eef8a9c8d608aaa56c511c246ff6187bba8101d76971a08. 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/QZTBC2318054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf383f5925fbd348477b458ab19ba7f22280214b4d5d560d78aa7c9784028e209. 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/QZTBC2318055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6510f5cb22eee1b7d45df538ca5900c576602b32c95b6c918876ad07cc05ed8f. 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/QZTB42355944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b924356d71e022e29b30dbff3fbcd20311b93b8f1724572d63c0faf8f19f200. 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/QZES62364036.