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 0x63a7b9a993817f9089d898b7bba3305ace7cfe2a71569cb5c9190cd58cf46947. 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/24d17e9d-d832-41a1-a18e-c616fb01b5d1.json and https://artists.proofprofile.net/proofs/artist/24d17e9d-d832-41a1-a18e-c616fb01b5d1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
DANCING WITH YOUR SHADOW (SPED UP 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969f11c107ed20e347161049def3f33b89615ca939d55a761c5dc034b7eb0761. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/QZTAZ2251432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10dd7f7e1b0040f2fe543df2de27167c3d385a06889811e6e89049ffa5964a39. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/NL3M12407325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d766daed4a609a0269278a40a48f0d0e5bba4a0a2719443b265827c6f9f4604. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/GBKQU2535094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650c005f7d7b206d6ec360355093a4cb7d32760e924fdc083bc88f5bf28fc9e8. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:42:10Z), 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/QZZ782501398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c0ca14011aedece1c33895c1388ff1d840921e4f4968bd43698aa484fc9cfe. 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/QZWFS2528188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x293b40a9bb73e2c769cc42d7a093086ad53cfaf6d1e66f41646b1501e7f088b6. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:51:34Z), 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/QMRSZ2501721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6f59c324d88100922c868702654b39ddcc95e169c131744df89ceeec40e2b7. 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/QMRSZ2501723.