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 0xbaccc1c1effb748d879586201398300cfa417a65486db8132f601ce00e9ddfb7. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/70ca6c08-dbd2-43a3-b82e-7ee4c650bf7b.json and https://artists.proofprofile.net/proofs/artist/70ca6c08-dbd2-43a3-b82e-7ee4c650bf7b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Life Is All About Love (Extended Version)
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 0xd2454a4dd4aaecf64419f774e36a5e4af0e9700cee66e8938da1852a998ade1d. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZTB42321743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d1b63bada498bc55320101a1ac992100016fa393b8a1b55605f824d24e99b9. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QZDA62490739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd84c956de4aefb38698cc940b7ee953d21ef7531523a1f72f75534bb991a53e. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZNWR2403965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a77a4f09f3bab387defd21b0d609e0558c94fb3119d1da7ad998553e4fdfc7d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZTAT2409327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8910f20b20203a42633b5f876513f4dc37437b36439eb1ee9cc04b337fcba4. Chain 2 (Bitcoin): anchored in block 959011 (2026-07-21T13:26:15Z), 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/QZHNA2444624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883e5a5dd31aca12a16bd9aacc01db0a12b19344d187a78b5196ae3e0cadb27a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZFZ42514385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ff92d3dee8400ff9b3b3f17e155d6859c91f7027416653d7660d15bca3ae9a. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZFZ42523656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6852502ce7ae0a2b7794c946b19473d404ff2c6a7dab1517e7fc659bcbb975be. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZHN92560910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6afeaf2c8d17fb63bb0f4c046f8b2b4b8c590b081493481f1b5ca30d4695bd. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZK6H2505950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d5d84302c20796d6d95f10f9d22cf90215a3ac04666975f05218dada033034. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZMEQ2525744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd0e09c23cae505a1abcf5f72f4487cf2fbadcc876c3387375427ee1c671356. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZNWX2557129.