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 0x049527a4b585387a9529102b05e578f20441315acd96d7ceeca24e68d1136e52. Chain 2 (Bitcoin): anchored in block 953780 (2026-06-15T12:02:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d4df20ed-10eb-4505-92b5-3c236545bb50.json and https://artists.proofprofile.net/proofs/artist/d4df20ed-10eb-4505-92b5-3c236545bb50.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Silent Night: Peaceful Christmas Music on Solo Piano
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 0xd78835b6767f2b0bddd41e26a73288243c08f54d2cd4ec4198e99980190b40bf. 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/USQX91902587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9241d7ca87ef788d2783988d0bd6707da91518ed838870dee058d4bdae355736. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:02:01Z), 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/USQX91902583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d0bae9f649a98e2d857ec3fa1c70b441ce115a6421e85a0ca1a07d9ae91e9b. 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/USQX91902581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9241d7ca87ef788d2783988d0bd6707da91518ed838870dee058d4bdae355736. 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/USQX91902583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d162423ac1d62a722b7f6aba7e340ee2ab38425ba915c858b3e98865954d78c. 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/USQX91902584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78835b6767f2b0bddd41e26a73288243c08f54d2cd4ec4198e99980190b40bf. 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/USQX91902587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19947f57575f2fb697425b7ec60fc807dc028cb6762093f5f0f1876fbf74f7af. 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/USQX91902588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dcd90b7bc101d1782e26d7b6f9c364b07b0b671e69c4881fbd4ded29c9bbc55. 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/USQX91902589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39339271f314b63ebf25ed0e4ed6a0d58d20d56c29da1a24d7d69dd0b9f6584. 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/USQX91902591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e67727331254b85f3b37205fe9de2709fff1ca32be10a6fba3eb686b2d0d04. 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/USQX91902592.