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 0xba7ea4fa88bd82f87e89c04967e3b296c4db59e45408a66951dbd5e27fd532e5. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/735e96f1-c5f5-4f6b-8d51-ef8bf4acfcfb.json and https://artists.proofprofile.net/proofs/artist/735e96f1-c5f5-4f6b-8d51-ef8bf4acfcfb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
I think I love your daughter, Santa Claus
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 0x04a5b2344b07b782ad824eb23da5466c3e29f3f8cd28710abf8675d1d2433a1d. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:01:21Z), 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/QZFZ42405377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b84331af880b27fcf4a4a4302e280f4a9af1c2a870f81e086e7e0d98bbf73d9. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZK6N2424390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x920e03d97fe098cd230bf067b552d332e89296229668d37c07aeb125f1d546b2. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZTB22488701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648b3abbbae1e706a3f6f4db3d2a04399348411bb6718c0ec93e75d6ca208b31. 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/QZTB72451294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbddab2f056bb70a196ce7ae56a571fa61153fe66f99ce7cdadae60fc750e82ff. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZZ7V2467442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe16c4b7f2ff1e32c9247e66f81c504d36c33d817df3c8a5dba42d91e4ac23586. 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/QZRP42527869.