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 0x551af1ea18e8bed70d0d605f48d929745f3b3c3a991bacd0bc03308c59c3f99d. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3b476adc-6b76-48bc-9994-bb0a48a0c57d.json and https://artists.proofprofile.net/proofs/artist/3b476adc-6b76-48bc-9994-bb0a48a0c57d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Good Old U.S.A. Wurlitzer Carousel Music Vol. 2
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 0x9ab8eae86ceff3bbcc84ca63273935eecc56266261a6ac28dd091d4b07559f61. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USCGH1023343.
Rock-A-Bye Your Baby With A Dixie Melody
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f85fbe277572526ec206da90ef7892de7d8ff516aae83b9b71f570eec22ebc4. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USCGH1023349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c271c33327ae5cabb5ed8c465ba998b5271f2ab4cf1968e4520b56c03bf7bfb. Chain 2 (Bitcoin): anchored in block 958495 (2026-07-18T04:39:02Z), 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/USCGH1015753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9dcb051c72e7629a8b1e1aaff93e3972255b9d1d2e899e62f8070d3707e576. 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/USCGH1015755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eed2bea060eaef151dab6292c2e9a027b924a999f81da61b1e0112196188687. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USCGH1015756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85233ea2558cad687dc6fe5e2cc7f787660824f38bc88c68313c125a27b7bb1. 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/USCGH1015757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c06f21e12fe57c1b32362d6755f6894d08c4a7ccfe7cd599ab637b18b28725d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USCGH1024198.