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 0x6016faf1dddc663819d2204d6b76c36a92f16438552ac0d74bc2f16a9a0d427f. Chain 2 (Bitcoin): anchored in block 953759 (2026-06-15T08:04:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b5573106-a642-4625-a730-e91701490698.json and https://artists.proofprofile.net/proofs/artist/b5573106-a642-4625-a730-e91701490698.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
DON'T STOP THE MUSIC(Royal Mirrorball Remix)
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 0x47dc687eabf49bad75ce0da05686fc5166a870ee5ee7a1c93854662563485c22. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-22T01:30:37Z), 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/JPB602078135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562dfef404c97cd1aaaee4bb273aa15ef0ce6cf405bc7d64e073e3cddbebea77. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/JPB602157805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf915cafedb04b93f87dc26c08bccf304b1e0c5bf46e08a370b258fc3c304ec8f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPB602195895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47dc687eabf49bad75ce0da05686fc5166a870ee5ee7a1c93854662563485c22. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPB602078135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25cc429a5a93066fc9f7b13f37f1c4d8b492938634c5702cdada2ed64c4407bd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPB602166786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d18d2a69046d697a0c308acdf9a9aed08a52b1c6973960f83011f4a10e1992. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPB602195933.