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 0x5665d87dfae09fb12b6846ace88f9a78f024d184388bd8513b2d8ae9ffef250b. 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/56b2457b-3264-4124-8f72-bd8ae39a5713.json and https://artists.proofprofile.net/proofs/artist/56b2457b-3264-4124-8f72-bd8ae39a5713.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Clan Sutherland Pipe Band: Scottish Pipes and Drums
Pipe Solo - The Gathering - Niall from Glenroe - Cape Breton Fiddlers' …
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 0x7368a1be602904b393f5146727149f9cc06cfce40788d0d805368888f3637347. 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/GBCKG0700101.
The Green Hills of Tyrol - When the Battle's o'er - Kilworth Hills
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd313ec902dd7ae7d3ede947d2721fd7e4d8b857b7456b23aa94ad324494d21d4. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/GBCKG0500313.
William Sloanes Air - Jacks Jig - Tripping up the Stairs - The Swallow's Tail
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5448b8d0ed5cb38800092463a0ef0bfbda61aecdcb57d43b2173ee7e74b593. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/GBCKG0500684.