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 0x7a849398f1d234503edb866d58dc21adb4cf80f8fc64bdef2ee2ffb6113740c0. 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/8d5a8914-510c-438a-8f56-f1bcadb12d42.json and https://artists.proofprofile.net/proofs/artist/8d5a8914-510c-438a-8f56-f1bcadb12d42.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 0xe5ab9d89dbb9db6edd9561d391e7c5deb48b10c978ac58876a6e3b1ddd2a7eed. 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/CH6542459148.
Endless Rose (Piano Theme From Claw Machine)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b83e2b0a76197649a410750ba50e91ad5b63d7e0b8e60257f5cec50736c6cb8. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/CH6542185326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e18c93d040bfb552aac96ccae2f529c40502bc5d139a93bbbb543094ab91663. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:38:26Z), 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/UKR6V2117477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5181bf4daa8650fcb2e91acc5a1e0814b60dd42f797a90ce10dc057b01881d62. 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/UKR6V2210032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e300d289779fa489745beab3efc10dc042648c3a24369da0187b00ac164378. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/NL4WT2200241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266d5c730701469ed46b0fc46a2b6c0a3f101bda0f062f102239dfc407d7e88d. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/AUKDT2300051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf03a52ffefed0f67c2955f97359dc9967ebe9230320c12d877d8ba28a0cb31. 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/AUKDT2400508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f54e065aa1dffd69fee808e1a39ee25dbe83e683c52f8c82d7e17239b847bb. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/US3DF2445374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6e6bb12031fff82162153b2501845a8cadd0a426fadc62d431ca1eba6fc60e. 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/CH6542526374.